Question

An alloy is made of 37% copper, 31% zinc and the rest nickel
Find the weight of nickel in 650grams of the alloy.

Answer 1

weight of copper in the alloy = 37 %

weight of zinc in the alloy = 31 %

total weight of copper and zinc in the alloy = 37 + 31 = 68 %

Find the % weight of Nickle :
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weight of Nickle in the alloy

= 100 - 68 = 32 %

according to the given statement :
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weight of alloy = 650 gm

weight of Nickle = 32 % of 650

= ( 32 × 650 ) / 100

= 20800 / 100 = 208 gm

therefore, weight of Nickle = 208 gm

Answer : Nickle = 208 gram

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Answer 2

Here's your answer!!

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Amount of alloy=650 g


And,

Quantity of copper in alloy =37 %

Quantity of zinc in alloy =31 %


So,

Quantity of Nickel,

=> 100-(Amount of copper +zinc)

$= > 100 \%- (37 \% + 31\%)$

$= > 100\% - 68\%$

$= > 32\%$

Hence,

Quantity of Nickel in alloy=32%


Now,

Weight of Nickel in 650 g of alloy =

$= > 32\% \: of \: 650$

$= > \frac{32}{100} \times 650$

$= > 208$


Hence,

Weight of Nickel in 650 g of alloy is ,"208 g".


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Hope it helps you!! :)