Question

the ratio of weights of copper and zinc in brass is 130:7. find the weight of zinc in a brass pot of 700 gm weight.
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Answer 1

Answer:

Weight of zinc is 245 grams

Answer 2

The ratio of weights of copper and zinc in brass is 130:7

The weight of zinc in a brass pot of 700 gm weight is 35.766 gm.

$\\ x = \frac{7}{130 + 7} \times 700 \\ x = \frac{7}{137} \times 700 \\ x = 35.766 \: gm$