Question

4.5g of an alloy of copper and zinc contains 3.5 of copper . What weight of copper will there be in 18.9of the alloy?​

Answer 1

Answer:

18.9 g of an alloy of copper and zinc contains g of copper. 18.9 g of an alloy of copper and zinc contains 14.7 g of copper. Therefore, 14.7 g of copper will there be in 18.9 g of alloy.

Answer 2

⠀⠀⠀⠀⠀⠀⠀⠀Question:

4.5g of an alloy of copper and zinc contains 3.5 of copper . What weight of copper will there be in 18.9of the alloy?

Correct Solution :

⠀⠀⠀⠀⠀⠀⠀Answer

14.7g of copper will there be in 18.9 g of alloy.

Given : 4.5g of an alloy of copper and zinc contains : 3.5g of copper.

To Find : What weight of copper will there be in 18.9g of alloy.

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According to the Question,

Applying Unitary Method.

4.5 g of an alloy of copper and zinc contains 3.5 g of copper.

1 g of an alloy of copper and zinc contains 3.5 / 4.5g of copper.

18.9 g of an alloy of copper and zinc contains 3.5 / 4.5 × 18.9g of copper.

18.9 g of an alloy of copper and zinc contains 14.7 g of copper.

$\sf Therefore, 14.7 g \: of \: copper \: will \: there \: be \: in \: { \underline \blue{ \underbrace { \boxed{ 18.9 g }}}} \\ \sf of \: alloy.$