Consider two alloys A and B 50 kg of alloy A is mixed with 70 kg of alloy B A contains brass and cop...........

Quantitative Aptitude ( CCS) Ratio, Proportion

Consider two alloys A and B. 50 kg of alloy A is mixed with 70 kg of alloy B. A contains brass and copper in the ratio 3 : 2, and B contains them in the ratio 4 : 3 respectively. What is the ratio of copper to brass in the mixture?

5:8

5:7

8:5

7:5

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Explanation:

Brass in A = 3/5 * 50 = 30 kg, Brass in B = 4/7 * 70 = 40 kg
Total brass = 30 + 40 = 70 kg
So copper in mixture is (50+70) – 70 = 50 kg
So copper to brass = 50 : 70 => 5:7