GMAT
题目
Bob finishes the first half of an exam in two-thirds the time it takes him to finish the second half. If the whole exam takes him an hour, how many minutes does he spend on the first half of the exam?
解析
设后半段时长为\( T \)分钟。
前半段时长为\( \frac{2}{3}T \)
总时长 = 60分钟：
\( \frac{2}{3}T + T = 60 \)
\( \frac{5}{3}T = 60 \)
=> \( T = 36 \)
\( \frac{2}{3} × 36 = 24 \)
24分钟
答案：B
在线客服
官方微信
公众号