PP T2-76

[edas9101]

雖然題目不完整(只有選項不完整)
可是答案是C
請問有人會算嗎??
感恩
76. 8721-!-item-!-187;#058&006602
A hiker walking at a constant rate of 4 miles per hour is passed by a cyclist traveling in the same direction along the same path at a constant rate of 20 miles per hour. The cyclist stops to wait for the hiker 5 minutes after passing her, while the hiker continues to walk at her constant rate. How many minutes must the cyclist wait until the hiker catches up?

(A)
(B) 15
(C) 20
(D) 25
(E)

[nemolee]

http://www.formosamba.com/phpBB3/viewtopi ... stant+rate