Question

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

Answer 1

Let the numbers in the ratio be 13x and 7x

It means weight of copper = 13x

Weight of zinc = 7x

Given, weight of brass = 700 gm



According to the question,


13x + 7x = 700

20x = 700

x = $\dfrac{700}{20}$

x = 35



Weight of copper = 13x = 13 × 35 = 455 grams

Weight of zinc = 7x = 7 × 35 = 245 grams




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Answer 2

Heya mate, Here is ur answer

$<b>Let the common ratio be x.$

Then weight of copper metal in brass alloy =13 x

weight of zinc metal in brass alloy=7 x

Total weight of alloy(utensil) =13x+7x

=20 x

A/Q

Weight of brass utensil=700 gm

So,

20x=700

x=700/20

x=35

So, weight of copper in brass utensil=13×35

=455

Weight of zinc in utensil=7×35

=245

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@Laughterqueen

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