If a apple costs c cents, how many apples can be bought for d dollars ?	Choose the most appropriate option:	A) 100acd	B) 100d/ac	C) ad/100c	D) c/100ad	E) 100ad/c
We can also solve the question using equivalent ratios.   Use the ratio number of apples/cost in DOLLARS   First, notice that c DOLLARS is 100 times more than c CENTS   So, if we can buy a apples for c cents, then we can buy 100a apples for c DOLLARS   Let x = the number of apples that we can by for d dollars   We can now set up two equivalent ratios.   100a/c = x/d   Cross-multiply to get: (100a)(d) = cx   Divide both sides by c to get: 100 ad/c = x   ANSW100ad/cR:100ad/c
<result>E</result>
If a apple costs c cents, how many apples can be bought for d dollars ?