question_answer

Milk and water in two vessels A and B are in the ratio 4 : 3 and 2 : 3 respectively. In what ratio the liquids in both the vessels should be mixed to obtain a new mixture in vessel C containing half milk and half water?

A) 1 : 1     

B)  1 : 3  

C)  1 : 2    

D)  7 : 5

Correct Answer: D

Solution :

Milk in A \[=\frac{4}{7}\]of whole,

Milk in B\[=\frac{2}{5}\] of whole

Milk in mixture of A and B \[=\frac{1}{2}\]of whole

Let the CP of unit quantity be Rs. 1.

CP of 1 unit of A    CP of 1 unit of B

Required ratio\[=\frac{1}{10}:\frac{1}{14}=14:10=7:5\]