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Question
35 inland letters cost Rs 87.50. How many such letters can we buy for 315?
Solution
Number of inland letters whose total cost is Rs 87.50 = 35
Number of inland letters of whose cost is Re 1 = `35/87.50`
Number of inland letters whose cost is Rs 315 = `315 × 35/87.50 = 11025/87.50 = 126`
Hence, we can buy 126 inland letters for Rs 315.
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