#### Question

The ratio of weight of copper and zinc in brass is 13 : 7. find the weight of zinc in a brass utensil weighing 700 gm.

#### Solution

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.

From the given information,

Given weight of brass = 700 gm

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

13x + 7x = 700

20x = 700

x = 35

∴ Weight of zinc in brass = 7 × 35 = 245 gm

Hence, the weight of zinc in a brass utensil is 245 gm.

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Solution The Ratio of Weight of Copper and Zinc in Brass is 13 : 7. Find the Weight of Zinc in a Brass Utensil Weighing 700 Gm. Concept: Word Problems of Equation in One Variable.