请教prep2 一DS题 谢谢

ecsniffers

what is the ratio of number of cups of flour to the numbers of cups of sugar required in a certain cake recipe?

1 the number of cups of flour required in the recipe is 250 percent of the number of cups of sugar

2 1.5 more cups of flour than cups of sugar  are required

答案A

aegeanyoung

1.the number of cups of sugar:X

  the number of cups of flour:250%X

  the ratio =250%X/X=2.5

2.the number of cups of sugar:X

  the number of cups of flour:X+1.5

  the ratio =(X+1.5)/X

ecsniffers

茅塞顿开啊~~ 谢谢LS的..