作者Diablotin (咕噜咕噜)
看板GMAT
标题[问题] MATH-PS1-51
时间Wed Aug 19 08:46:02 2009
51. 6587-!-item-!-187;#058&005111
Circular gears P and Q start rotating at the same time at constant speeds.
Gear P makes 10 revolutions per minute, and gear Q makes 40 revolutions
per minute. How many seconds after the gears start rotating will gear Q
have made exactly 6 more revolutions than gear P ?
(A) 6
(B) 8
(C) 10
(D) 12
(E) 15
这题解答上少给答案了
大家可以算一下看答案是哪一个吗？
请告诉我算法 感谢你
我的答案是D
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※ 编辑: Diablotin 来自: 174.1.45.169 (08/19 09:03)