A 25% gain is made by selling the mixture of two types of flour at Rs. 450 per kg. If the type one costing 620 per kg was mixed with 130 kg of the other, how many kilograms of the former was mixed?

A 138 kg

B 34.5 kg

C 69.5 kg

D Cannot be determined

E None of these

Correct Answer: Option D

We cannot determine the answer because we don’t know the price per kg of the other ghee.

Hence, we cannot find the ratio of mixing which would be required to further solve the question.