text: From ETS Paper test A certain fruit stand sold apples for : PS Archive
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  # From ETS Paper test A certain fruit stand sold apples for
  
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  From ETS Paper test A certain fruit stand sold apples for [#permalink]
  
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  03 Jun 2006, 10:14
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  From ETS Paper test
  
  A certain fruit stand sold apples for $0.70 each and bananas for$0.50 each. If a customer purchased both apples and bananas from the stand for a total of $6.30, what total number of apples and bananas did the customer purchase? A. 10 B. 11 C. 12 D. 13 E. 14 What is the fastest way to solve this? I used trial and error. Manager Joined: 09 May 2006 Posts: 99 Location: Bangalore, India Followers: 2 Kudos [?]: 40 [0], given: 0 ### Show Tags 03 Jun 2006, 10:27 B - 11 Mutliplied all values by 10 and then trial and error under given conditions. Trying to figure out 9a + 5b = 63 Manager Joined: 10 May 2006 Posts: 186 Location: USA Followers: 1 Kudos [?]: 5 [1] , given: 0 ### Show Tags 03 Jun 2006, 19:27 1 This post received KUDOS Did this by trial and error as well. I took the largest value, cost of apples, and multiplied it by 9 =$6.30. This is the largest number of apples the person could have bought. However, since this person bought both apples and bananas, i kept going.
  
  Then checked 8 apples ($5.60) which leaves$0.70 for bananas. Can't be the right amount since it doesn't divide evenly.
  
  Did trial and error, until I got down to 4 apples ($2.80) which left$3.50 for apples. Works.
  
  11 fruits total.
  03 Jun 2006, 19:27
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