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How many kilograms of salt at Rs.50 / Kg must be mixed with 40 Kgs. of salt that costs Rs.35 / Kg so that a merchant will get 20% by selling the mixture at Rs.48 / Kg?

A) 30 Kgs.
B) 25 Kgs.
C) 20 Kgs.
D) 15 Kgs.

Correct Answer:



C) 20 Kgs.

Description for Correct answer:

The merchant makes 20% profit, which means that the selling price = cost price + 20% of cost price, i.e. SP = 120% of CP = 1.2 CP
The merchant is selling the mixture at Rs.48 / Kg
Therefore, cost price of the mixture is equal to \( \Large \frac{48}{1.2} \) = Rs.40 / Kg
\(

\)
Thus 2 Kgs. of salt at Rs.35 / Kg should be mixed with 1 Kg. of salt costing Rs.50 / Kg.
i.e. 20 Kgs. of salt that costs Rs.50 per Kg should be mixed with 40 Kgs. Rs.35 / Kg.

Part of solved Mixture and Allegation questions and answers : >> Aptitude >> Mixture and Allegation

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