CAT 2020 Ratio, Proportion and Variation Question (Medium)

Question

An alloy is prepared by mixing metals A, B, C in the proportion 3 4 7 by volume. Weights of the same volume of metals A, B, C are in the ratio 5 2 6. In 130 kg of the alloy, the weight, in kg, of the metal C is

Accepted Answer

Step 1 Volume ratio of metals A B C 3 4 7 Weight per unit volume ratio of A B C 5 2 6 To get actual weight ratio, multiply volume and weight unit volume for each metal - A 3 5 15 - B 4 2 8 - C 7 6 42 So, weight ratio of A B C 15 8 42 Step 2 Total parts 15 8 42 65 Total alloy weight 130 kg Each part

CAT 2020

Quantitative

Ratio, Proportion and Variation

Medium

An alloy is prepared by mixing metals A, B, C in the proportion 3 : 4 : 7 by volume. Weights of the same volume of metals A, B, C are in the ratio 5 : 2 : 6. In 130 kg of the alloy, the weight, in kg, of the metal C is

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