Henry eats X scones in X percent of the time it takes Rachel to eat Y scones. If Rachel eats four scones in ten minutes, then the number of minutes it takes Henry to eat 10 scones must be equal to which of the following? Choose the most appropriate option:
A) Y/4  B) 200/Y  C) 100Y/(6X)  D) XY/200  E) Y/(5X)
Rachel eats 4 scones/10 minutes = 2/5 scones per minute   The time for Rachel to eat 1 scone is 5/2 minutes.   The time for Rachel to eat Y scones is 5Y/2 minutes.   The time for Henry to eat X scones is 5YX/200 minutes.   The time for Henry to eat 1 scone is 5Y/200 minutes.   The time for Henry to eat 10 scones is 50Y/200 = Y/4 minutes.   The answer is Y/4.
<result>A</result>
Henry eats X scones in X percent of the time it takes Rachel to eat Y scones. If Rachel eats four scones in ten minutes, then the number of minutes it takes Henry to eat 10 scones must be equal to which of the following?