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Physical Quantities and Measurement

Zinc and copp...

Question

Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 28.8 kg of zinc has been consumed in it ?

A

58 kg

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B

60 kg

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C

64 kg

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D

70 kg

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Solution

The correct option is C 64 kg
For $9$ kg zinc, mixture melted = $(9 + 11) k g$ .
For $28.8$ kg zinc, mixture melted
$= \frac{20}{9} \times 28.8 = 64 k g .$

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