18.5 m of cloth costs ₹ 666. Find the cost of 3.8 m cloth
Answer should be ₹ 136.80
If the cost of 7 m cloth is ₹ 700. The cost of 21 m of cloth is ₹ 2100.
An open cuboidal box has dimensions 20 cm×10 cm×5 cm. Find the cost of painting the box from outside if the painting cost is ₹ 2/cm2.