Question

2. The ratio of the weights of copper and zinc in brass is 13:7.

Find the weight of zinc in a brass utensil weighing 700 gm.​

Answer 1

Answer:

Let proportionality constant be 'x'

then, weight of copper =13x

and weight of zinc =7x

As per the question

Weight of brass =700 gm

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

⇒13x+7x=700

⇒20x=700

⇒x=35

Hence, Weight of copper in brass =13×35=455 gm

Weight of zinc in brass =7×35=245 gm

Answer 2

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