question_answer

A mixture of rice is sold at Rs 3-00 per kg. This mixture is formed by mixing the rice of Rs 2.10 and Rs 2.52 per kg. What is the ratio of price of cheaper to the costlier quality in the mixture, if the profit of 25% is being earned?

A)  5 : 2           

B)  2 : 7

C)  2 : 5              

D)  15 : 8

Correct Answer: C

Solution :

Let the cost price of the mixture be Rs per kg, then selling Price \[=x+\frac{25\times x}{100}=3\] \[\Rightarrow \] \[1.25x=3\] \[\Rightarrow \] \[x=2.4\] Now, the average cost price of mixture = Rs 2.4 Therefore, the ratio of cheaper to costlier rice is 12  : 30 i.e., 2 : 5.