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Q.

The proportion of copper and zinc in the brass is 13 : 7. How much zinc will there be in 100 kg of brass ? 

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a

20 kg

b

35 kg

c

14 kg

d

55 kg

answer is B.

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Detailed Solution

Copper : Zinc 13 : 7

Zinc in 100kg of brass  = ?

 =720 × 100 kg

= 35  kg

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