Question

A lady used Rs.135 per month to buy wheat at prevailing price. When the price rose by 40paise, for the same amount she could purchase 2kg less. What is the original price of wheat per kg.

Answer 1

Step-by-step explanation:

Since first and second varieties are mixed in equal proportions.

So, their average price = Rs. 126 + 135 = Rs. 130.50

2

So, the mixture is formed by mixing two varieties, one at Rs. 130.50 per kg and the other at say, Rs. x per kg in the ratio 2 : 2, i.e., 1 : 1. We have to find x.

By the rule of alligation, we have:

Cost of 1 kg of 1st kindCost of 1 kg tea of 2nd kind

Rs. 130.50 Mean Price

Rs. 153 Rs. x

(x - 153) 22.50

x - 153 = 1

22.50

x - 153 = 22.50

x = 175.50