5 metres of muslin cloth costs ₹210. The cost of 8 metres of the cloth is ______.
Given, the cost of 5 metres of muslin cloth = ₹210
The cost of 1-meter muslin cloth = 2105
= ₹42
∴ The cost of 4-meter cloth = 4 × the cost of 1 meter cloth
= 8 × 42
= ₹336