Question

ten pencils cost ₹15. How many pencils can be bought ₹72

Answer 1

No. of pencils Rs 15 can buy = 10
No. of pencils Rs 1 can buy = 10/15
No. of pencils Rs 72 can buy = 10/15*72
= 48 pencils

Answer 2

Cost of 10 pencils = ₹15

Cost of 1 pencil = ₹15/10 = ₹1.5

Number of pencils can be be bought in ₹72 is
= ₹72 × 1 pencil / (₹1.5)
= 48 pencils

Total 48 pencils can be bought in ₹72