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lemonade

by Rajani » Sun Aug 09, 2009 10:54 pm
A lemonade stand sold only small and large cups of lemonade on Tuesday. 3/5 of the cups sold were small and the rest were large. If the large cups were sold for 7/6 as much as the small cups, what fraction of Tuesday's total revenue was from the sale of large cups?
7/16

7/15

10/21

17/35

1/2
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by tohellandback » Sun Aug 09, 2009 11:02 pm
IMO A
plugging in numbers:

total lemonade sold=100
small=60
large=40

price of small cup=6
total from small cups=60*6=360

price of large cups=7
total from large cups=280

280/(280+360)= 7/16
The powers of two are bloody impolite!!
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Re: lemonade

by vyomb » Mon Aug 10, 2009 1:44 am
Rajani wrote:A lemonade stand sold only small and large cups of lemonade on Tuesday. 3/5 of the cups sold were small and the rest were large. If the large cups were sold for 7/6 as much as the small cups, what fraction of Tuesday's total revenue was from the sale of large cups?
7/16

7/15

10/21

17/35

1/2
IMO ans is A
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