Problem Solving
试题详情
题目：
Pat, Kate, and Mark charged a total of 162 hours to a certain project. If Pat charged twice as much time to the project as Kate and 1/3 as much time as Mark, how many more hours did Mark charge to the project than Kate?
选项:
A、 18
B、 36
C、 72
D、 90
E、 108
答案:
D
