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Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by AJWILL » Sat Aug 04, 2012 12:36 pm
A shopkeeper was selling Apples, Mangoes, Oranges and Bananas. The price of one Mango was 25% more than that of one Apple, 50% more than that of one Orange and 100% more than that of one Banana. What was the percentage share of revenue from Oranges as compared to the total revenue from the above given fruits?
(1) The numbers of Bananas, Mangoes, Apples and Oranges sold were in the ratio 4:1:2:3
(2) The total revenue by selling Apples, Mangoes, Oranges and Bananas is $66
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by Jim@StratusPrep » Mon Aug 06, 2012 7:57 am
You can put everything in terms of Mangos.

Apple = 1.25M
Orange = 1.5M
Banana = 2M

So the ratio of prices for M : A : O : B = 1 : 1.25 : 1.5 : 2

1) SUFFICIENT: Total revenue for each can be calculated by multiplying the 2 ratios, thus you could get Orange revenue and total revenue. Yes, it is a ratio and not actual numbers, but when you are looking at percentages, ratios are all you need.

2) INSUFFICIENT: You have no idea the breakdown of each item You could have a bunch of oranges or just 1. There are no constraints on the quantity of each.

A is your answer.
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