Question

Choose the correct answer from the alternatives given.
Prabhu purchased 30 kg of rice at the rate of Rs. 17.50 per kg and another 30 kg rice at a certain rate. He mixed the variety of two rice and sold the entire quantity at the rate of Rs.18 per kg and made 20% overall profit. At what price per kg did he purchase the lot of another 30 kg rice?

• A. Rs. 14.50
• B. Rs. 12.50
• C. Rs. 15.50
• D. Rs. 13.50

Answer 1

The correct option is B Rs. 12.50

Let the price at which the other $30$ kg was bought be Rs. x.
CP of mixture = $\frac{100}{120}\times 18=15$
$\frac{2.5}{15x}=\frac{30}{30}$
$15x=2.5$
Hence, x= Rs. $12.5$