8. A grocer purchased a quantity of bananas at 3 pounds for $0.50 and sold the entire quantity at 4 pounds for $1.00. How many pounds did the grocer purchase if the profit from selling the bananas was $10.00?
(A) 40
(B) 60
(C) 90
(D) 120
(E) 240
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Answer is D
ReplyDeletepurchase rate per pound is = $0.50/3
ReplyDeleteselling rate = $1.00/ 4 = $.25
Profit per pound = $0.25 - $0.50/3 = $0.25/3
Total bananas when profit is $10 =
= 1 * 10 / (0.25/3)
= 120