Q:

A) Rs. 19.50 | B) Rs. 19 |

C) Rs. 18 | D) Rs. 18.50 |

Answer: C) Rs. 18

Explanation:

Explanation:

Let the price of the mixed variety be Rs. x per kg. By the rule of alligation, we have :

Cost of 1 kg of type 1 rice Cost of 1 kg of type 2 rice

$\therefore $(20-x)/(x-15) = 2/3

$\Rightarrow $ 60 - 3x = 2x - 30

$\Rightarrow $ x = 18.