A coffee cart made $2400 in revenue . If a large cup of coffee costs twice as much as a small cup , the cart sold 950 large cups and it sold nothing besides the two sizes , then how many small cups of coffee did it sell ?
(1) A large cup of coffee costs $2
(2) If the cart had sold 20% fewer smaller cups , its revenue would have been reduced by 4%
[spoiler] The OA is given as D . But I think the answer should be A . I don't quite understand how statement (2) is sufficient to solve this problem . Because if you take only (2) then you'll have two unknown variables ( the cost of either the large cup/small cup as well as the number of small cups , how can you solve that ? ) [/spoiler]
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(1) A large cup of coffee costs $2
(2) If the cart had sold 20% fewer smaller cups , its revenue would have been reduced by 4%
[spoiler] The OA is given as D . But I think the answer should be A . I don't quite understand how statement (2) is sufficient to solve this problem . Because if you take only (2) then you'll have two unknown variables ( the cost of either the large cup/small cup as well as the number of small cups , how can you solve that ? ) [/spoiler]
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