The weights of copper and zinc in brass is 13:7.Find the weights of zinc in brass utensil weighing 1400gm?

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Answer:The ratio of weight of copper and zinc in brass is 13 : 7. Let the weight of the copper be 13x. Weight of zinc be 7x. Hence, the weight of zinc in a brass utensil is 245 gm.

## Explanation:–

Let proportionality constant be ‘x’

then, weight of copper = 13x

and weight of zinc = 7x

As per the question

Weight of brass = 1400 gm

Weight of copper in brass + Weight of zinc in brass = 700 gm

⇒13x + 7x = 1400

⇒20x = 1400

⇒x = 70

Hence, Weight of copper in brass = 13 × 70 = 910 gm

Weight of zinc in brass = 7 × 70 = 490 gm

Answer:–Weight of copper in brass = 910 gm

Weight of zinc in brass = 490 gm