question_answer

In what ratio Darjeeling Tea costing Rs. 320 per kg be mixed with Assam Tea costing Rs. 250 per kg so that there is a gain of 20% by selling the mixture at Rs. 324 per kg?

A) 1 : 2     

B)  2 : 3     

C)  3 : 2    

D)  2 : 5

Correct Answer: D

Solution :

CP of the mixture \[=\frac{324\times 100}{120}\]= Rs. 270 \[\therefore \] Required ratio = 2 : 5