Question

the price of 4pen or 7 pencil s 28 rupee. find the cost of 5 pen and 5

pencil.​

Answer 1

Step-by-step explanation:

If the cost of 4 pen = 28rs

∴ cost of 1 pen = 28 ÷ 4 = 7rs

If the cost of 7 pencil = 28rs

∴ cost of 1 pencil = 28 ÷ 7 = 4rs

henceforth

If the cost of 5 pencil and 5 pen = ? rs

cost of 5 pencil = 5 × 4 =rs 20

cost of 5 pen = 5 × 7 = rs 35

The cost of 5 pencil and 5 pen = 20 + 35 = 55rs