Question

if the cost of 5kg wheat is Rs. 100

(a) what will be the cost of 8kg of wheat

(b) how much kg of wheat can be purchased in Rs. 10

Answer 1

(1). Cost of 5 kg wheat = Rs. 100
Cost of 1 kg wheat = $\frac{100}{5}=Rs.20$

cost of 8 kg wheat = Rs. (20 $\times$ 8) = Rs. 160

(2). Quantity of wheat bought for Rs. 20 = 1 kg
Quantity of wheat bought for Re. 1 = $\frac{1}{20}\mathrm{kg}$

Quantity of wheat bought for Rs. 10 = $\left(\frac{1}{20}\times 10\right)=0.5\mathrm{kg}$