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What quantity of coffee at Rs.13/kg should be mixed with 10 kg of coffee at Rs.18/kg, to make a mixture of coffee worth Rs.1/kg?

A) 20 Kgs.
B) 30 Kgs.
C) 25 Kgs.
D) 10 Kgs.

Correct Answer:

A) 20 Kgs.

Description for Correct answer:
Using the alligation rule.

Rs.13.5/kg Rs.18/kg \ / Rs.15/kg / \ 3' . 1.5 Therefore, ratio in which the varieties of coffee (Rs.1 3.5/kg : Rs.18/kg) should be mixed = 3 :1.5 = 2 :1 Or, 10 kgs of coffee (Rs.18/kg) should be mixed with 20 kgs of coffee (Rs.13.5/kg)

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

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