Answers

2016-01-17T13:14:00+05:30
35 - $87.50
?  -$ 315

315×35
  87.50


126
we can buy 126 such letters for $315
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2016-01-17T13:17:14+05:30
First we have to divide 87.50 by 35 = 2.5 
Then multiply 315 by 2.5 = 787.5
Ans- We can buy 787.5 letters in $315.
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