Example Question - percentage calculation
Here are examples of questions we've helped users solve.
Calculating Percentage of One Number from Another Number
<p>Para encontrar el porcentaje que representa 129 sobre 860, divida 129 entre 860 y multiplique el resultado por 100.</p> <p>\(\frac{129}{860} \times 100 = x\)</p> <p>\(x = 15\% \)</p>
Calculating Percentage of a Given Quantity
\[ 6\% \text{ de } Q4800.00 = \frac{6}{100} \times 4800.00 = 288.00 \]
Decimal to Percentage Conversions Guide
La imagen muestra tres conversiones de números decimales a porcentajes. La conversión de un número decimal a un porcentaje se hace multiplicando el número decimal por 100 y añadiendo el símbolo de porcentaje (%). En la imagen, se muestra el siguiente conjunto de conversiones: 1. \( 0.36 \) convertido a \( 36\% \) 2. \( 0.35 \) convertido a \( 35\% \) Para ambos casos, el proceso es correcto. Por ejemplo, para convertir \( 0.35 \) a porcentaje: \( 0.35 \times 100 = 35 \) Luego, añades el símbolo de porcentaje (%), entonces: \( 0.35 = 35\% \) La imagen indica el proceso correctamente. Si necesitas realizar otra operación o tienes otra pregunta específica, házmelo saber.
Converting Fractions to Decimals and Percentages
Para resolver la pregunta de la imagen, primero necesitamos convertir la fracción dada a su forma decimal y luego a porcentaje. La fracción dada es 3/8. Para convertirla a decimal, simplemente dividimos el numerador (3) entre el denominador (8): 3 ÷ 8 = 0.375 Ya tienes el número decimal en la tabla, que es 0.375. Ahora, para convertirlo a porcentaje, multiplicamos el número decimal por 100 y agregamos el signo de porcentaje (%) al final: 0.375 × 100 = 37.5% Entonces el porcentaje correspondiente a la fracción 3/8 es 37.5%. La tabla completa con la fracción, el decimal y el porcentaje sería: Fracción: 3/8 Decimal: 0.375 Porcentaje: 37.5%
Analyzing Chocolate Boxes Problem
Para resolver esta pregunta, necesitamos averiguar de cuál caja Matías dejó más de los tres quintos de los chocolates. Para entender mejor, vamos a trabajar con un número hipotético para la cantidad de chocolates en cada caja. Supongamos que cada caja tiene 5 chocolates (tomamos este número porque es un múltiplo de 5 y nos permite trabajar con los quintos fácilmente). Los tres quintos de 5 chocolates serían \( \frac{3}{5} \times 5 = 3 \) chocolates. Por lo tanto, si Matías deja más de 3 chocolates en alguna caja, eso significa que se comió menos de 2 chocolates de esa caja. Dado que la pregunta es cuál dejó más de tres quintos, esto significa que estamos buscando una situación en la que Matías se haya comido menos de la cantidad que representaría tres quintos de la caja. Como no tenemos las figuras, no podemos determinar con exactitud de cuál caja dejó más. Sin embargo, vamos a considerar que Matías dejó más de tres quintos en la caja en la que menos chocolates comió. Una vez identificamos esa caja con la menor cantidad de chocolates consumidos por Matías (mayor cantidad dejada), para calcular el porcentaje correspondiente al número de chocolates dejados en la caja, utilizamos la siguiente fórmula: Porcentaje dejado = \( \frac{\text{Chocolates dejados}}{\text{Total de chocolates}} \times 100 \)%. Si en realidad dejó más de 3 chocolates, digamos 4 chocolates, el cálculo sería: Porcentaje dejado = \( \frac{4}{5} \times 100 \% = 80 \% \). Esto representaría que Matías dejó el 80% de los chocolates en esa caja. Para dar una respuesta precisa necesitaríamos ver las figuras o tener más detalles del problema sobre cuántos chocolates comió de cada caja.
Calculating Total Bill with Tax and Tip
To solve the question in the image, we need to calculate the total bill for a party which was originally $346.98, by adding on a 6.5% tax and an 18% tip. We want to find the final amount including both tax and tip. First, let's calculate the tax: 6.5% of $346.98 = 0.065 * $346.98 = $22.5537 Now let's add the tax to the original bill: $346.98 + $22.5537 = $369.5337 Next, we’ll calculate the tip based on the original amount before tax because tipping practices vary, and some people calculate the tip based on the pre-tax amount: 18% of $346.98 = 0.18 * $346.98 = $62.4564 Now let's add the tip to the bill amount that already includes tax: $369.5337 + $62.4564 = $431.9901 Finally, since we are asked to round to pennies (which means rounding to the nearest cent), the total party bill would be: $431.99 Hence, the total bill for the party, including tax and tip, is $431.99.
Percentage Calculation Task
Dựa vào hình ảnh cung cấp, đây là một bài toán về tính tỉ lệ phần trăm. Đề bài yêu cầu ta tính tỉ lệ phần trăm của số thứ nhất so với số thứ hai. Công thức tính tỉ lệ phần trăm là: Tỉ lệ phần trăm = (số thứ nhất / số thứ hai) * 100% Áp dụng công thức này cho từng cặp số trong bài toán: 1. 21 so với 20: Tỉ lệ phần trăm = (21 / 20) * 100% = 105% 2. 36 so với 41: Tỉ lệ phần trăm = (36 / 41) * 100% ≈ 87.8% 3. 16 so với 20: Tỉ lệ phần trăm = (16 / 20) * 100% = 80% Vậy tỉ lệ phần trăm của cặp số thứ nhất là 105%, cặp số thứ hai là khoảng 87.8%, và cặp số thứ ba là 80%.
Flavor Enjoyment Percentage Calculation
Based on the information provided: - 80% of people enjoy vanilla flavor. - 25% enjoy both vanilla and cherry flavor. To find out what percentage of vanilla enjoyers also enjoy cherry, we need to calculate the ratio of people who enjoy both flavors to those who enjoy vanilla. In other words, we need to divide the percentage of people who enjoy both flavors by the percentage of people who just enjoy vanilla, then multiply by 100 to convert it to a percentage. \( \frac{25}{80} \times 100 = 31.25% \) So, 31.25% of the people who enjoy vanilla flavor also enjoy cherry flavor.
Calculating Percentage of Regular Sodas Served
To find out what percentage of the sodas served were regular, you need to do the following steps: 1. Calculate the total number of sodas served: regular sodas + diet sodas. 2. Calculate the percentage of regular sodas out of the total number of sodas. David's Diner served 12 regular sodas and 3 diet sodas. Total sodas served = 12 regular + 3 diet = 15 sodas. Now to get the percentage of regular sodas, you divide the number of regular sodas by the total number of sodas and multiply by 100%. Percentage of regular sodas = (12 / 15) × 100% Percentage of regular sodas = 0.8 × 100% Percentage of regular sodas = 80% So, 80% of the sodas served were regular.
Calculating Number of People Who Liked a Plan
To find out how many people liked the plan for the park, you need to calculate 3% of 2,000 people. To calculate this, you can multiply the total number of people surveyed by the percentage (in decimal form): Number of people who liked the plan = Total number of people surveyed x Percentage (in decimal) Convert the percentage to a decimal by dividing it by 100: 3% = 3 / 100 = 0.03 Then multiply the total number of surveyed people by the decimal: 2,000 x 0.03 = 60 So, 60 people liked the plan for the new park.
Analyzing Preference for Soccer vs Baseball among Girls
To find what percent of the girls surveyed prefer soccer to baseball, look at the number of girls who prefer soccer and divide it by the total number of girls surveyed (which is the sum of girls who prefer soccer and girls who prefer baseball), then multiply by 100 to get the percentage. According to the table provided: Number of girls who prefer soccer: 12 Number of girls who prefer baseball: 18 Total number of girls surveyed: 12 (soccer) + 18 (baseball) = 30 Now calculate the percentage who prefer soccer: (12 / 30) * 100 = 40% So, the answer is C. 40%.
Analyzing Data in Two-Way Table for Fish Weight
To solve this problem, we need to analyze the data in the two-way table provided. We’ll calculate the percentage for each statement and then determine which one is true. Statement A: All of the trout caught, 50% weighed less than 8 pounds. To evaluate this, we look only at the trout data: There were 12 trout caught that weighed less than 8 pounds, and 6 that weighed 8 pounds or more. Total trout caught = 12 + 6 = 18 trout. Percent weighing less than 8 pounds = (12 / 18) * 100% = 66.7% (not 50%). Statement B: All of the bass caught, 25% weighed 8 pounds or more. For the bass data: There were 4 bass caught that weighed 8 pounds or more, and 8 that weighed less. Total bass caught = 4 + 8 = 12 bass. Percent weighing 8 pounds or more = (4 / 12) * 100% = 33.3% (not 25%). Statement C: Of all the fish that weighed less than 8 pounds, 25% were trout. To evaluate this, consider only the fish that weighed less than 8 pounds: Trout that weighed less than 8 pounds = 12, Bass that weighed less than 8 pounds = 8, Total fish that weighed less than 8 pounds = 12 + 8 = 20 fish. Percent of these that were trout = (12 / 20) * 100% = 60% (not 25%). Statement D: Of all the fish caught, more than 50% were bass that weighed less than 8 pounds. We will compare the number of bass that weighed less than 8 pounds to the total number of fish. Bass less than 8 pounds = 8, Total fish caught = 18 (trout) + 12 (bass) = 30 fish. Percent of these that were bass weighing less than 8 pounds = (8 / 30) * 100% ≈ 26.7% (not more than 50%). From the calculations above, it's clear that none of the statements A, B, C, or D are true based on the information provided in the two-way table.
Calculating Probability of Pressing Special Keys on a Telephone Keypad
The question asks about the probability of pressing one of the two special keys on a telephone keypad that has numbers 0 through 9 and two special keys, for a total of 12 keys. To solve this probability question: - Total number of keys = 12 (0-9 plus two special keys) - Number of special keys = 2 (the # and * keys) The probability of pressing one of the special keys is: Number of special keys / Total number of keys = 2 / 12 = 1 / 6 To convert this to a percentage, multiply by 100: (1 / 6) * 100 = approximately 16.67% So, the closest answer from the options provided is: C. 17% Therefore, the answer to the question is C. 17%.
Calculating Pawnbroker's Interest Rate
The image shows a word problem which reads: Joaquin pawns his favorite watch for a loan of $120. After 30 days, he buys his watch back for $140. What interest did the pawnbroker charge Joaquin? To solve this you would: 1. Calculate the total amount of interest charged by subtracting the initial loan amount from the amount paid to reclaim the watch: $140 - $120 = $20. 2. To find the percentage interest rate, you compare the interest charged to the initial loan amount using the formula: Interest Rate = (Interest Charged / Initial Loan Amount) × 100 3. Substitute the numbers in: Interest Rate = ($20 / $120) × 100 = 1/6 × 100 4. Calculate the final percentage: Interest Rate = 16.666... % Rounded to the nearest whole number, the pawnbroker charged Joaquin 17% interest.
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