Vans: 49
Bus: 53
You have to divide each number by the amount of people, and then round to the nearest whole... because you can not have a part of a person. After that, you estimate each whole from each amount, and get the amount that was estimated. As in the A group there were more buses than vans mostly estimated to 53 Buses. As of group B there were more vans to estimate of 49 people per van.