Question

2.3. The ratio of weights of copper and zinc
in bisnes is 13:7. Find the weight of sine
in a brage utensil weighing 700 gm.​

Answer 1

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