Question

35 inland letters cost Rs 87.50. How many such letters can we buy for 315?

Answer 1

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 = 11025 = 126
87.50 87.50
Hence, we can buy 126 inland letters for Rs 315.