The rice sold by a shopkeeper contains 15 low quality rice What quantity of good quality rice should...........

Quantitative Aptitude ( CCS) Mixture and Alligation

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The rice sold by a shopkeeper contains 15% low quality rice. What quantity of good quality rice should be added to 70 kg of rice so that percentage of low quality wheat becomes 7%?

50 kg

40 kg

90 kg

80 kg

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Explanation:

In good quality rice, there is 0% low quality rice
So method of allegation:
(70 kg)……………………(x kg)
15% …………………………0%
…………………..7%
7……………………………..8
So 7 : 8
Gives 70/x = 7/8
Solve, x = 80 kg

Hence, option 4 is the correct answer.

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