Solution:
To find the minimum total distance from Gobabis to Maun, passing through Buitepos, we need to take into account the given accuracies.The guide book states that the distance from Gobabis to Buitepos is 121 km, accurate to the nearest kilometer, which means that this distance could be anywhere from 120.5 km to 121.5 km, but for the minimum distance, we'll consider the lower bound of 120.5 km.The distance from Buitepos to Maun is said to be 480 km, accurate to the nearest 10 kilometers. Thus, this distance could range from 475 km to 485 km, but again for the minimum distance, we'll consider the lower bound of 475 km.Adding these two minimum distances together gives us:120.5 km (from Gobabis to Buitepos) + 475 km (from Buitepos to Maun) = 595.5 kmTherefore, the minimum total distance from Gobabis to Maun, passing through Buitepos, is 595.5 km.