Mixture and Alligation

Quantitative Aptitude (CHSL)

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How many kgs of rice of variety-1 costing Rs.42/kg should a shopkeeper mix with 25 kgs of rice of variety-2 costing Rs.24 per kg so that he makes a profit of 25% on selling the mixture at Rs.40/kg?

Explanation:

25% profit by selling the mixture at Rs.40/kg, his cost per kg of the mixture = Rs.32/kg.
(x×42)+(25×24)=32(x+25)
42x+600=32x+800
10x=200
x=20kgs.

By: Pranav Gupta

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