Question

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Brass is alloyed with 30 % of Zink and 70% of copper . If 210 g of copper has been used in an alloy , find the weight of Zink and alloy.

Answer 1

$\huge\bold\color {green}{Hello \: Friend \: !!}$


$\red {\bold {Here \: is \: your \: answer}}$


$\underline\bold{Question : Find \: the \: weight \: of \: zinc \: and \: alloy}$


▶ Given :


↪ Percentage of zinc = 30%


↪ Percentage of copper = 70%


↪ Amount of copper = 210 g


▶ To Find : Find the weight of zinc and alloy


▶ Solution :


↪ Let the total amount of alloy be x.


↪ 70x / 100 = 210


↪ x / 100 = 3


↪ x = 300 g


↪ Amount of zinc = 30 / 100 × 300


↪ Amount of zinc = 90 g



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Answer 2

$\huge\color{red}{Hello}$$\huge\color{red}{friends,}$

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$\huge\color{orange}\boxed{Answer}$

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$<b><i><u>So$ Simple

Let total amount of alloy = x

70 x / 100 = 210

x / 100 = 3

x = 300

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$\huge\color{orange}\boxed{Answer = 300 grams}$



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Amount of Zinc = 30 / 100 * 300


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$\huge\color{orange}\boxed{Answer = 90 grams}$



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