Question

38kg of rice cost ₹275.50.what is cost of 20kg such rice ?

Answer 1

Cost of 38kg of rice = Rs. 275.50
Cost of 1kg of rice = 275.50 ÷ 38 = Rs. 7.25
Cost of 20kg of rice = 7.25 × 20 = Rs. 145

Thus 20kg of rice would cost 145 Rs.

Hope it helps!

Answer 2

We will use unitary method.
Cost of 38kg of rice=Rs 275.50
Therefore, cost of 1kg rice=Rs 275.50/38 that is Rs7. 25
cost of 1kg rice=Rs 7.25
Therefore, cost of 20kg rice = cost of one kg rice * 20
That is, Rs 7.25*20=Rs145