Question

8. The ratio of copper and zinc in an alloy is 9 : 5. If the weight of zinc in the alloy is 95,
what is the weight of copper in it?
​

Answer 1

SOLUTION:

_______________________________________

ANSWER:

• 52.77(Approx) grams.

GIVEN:

The ratio of copper and zinc in an alloy is 9 : 5. If the weight of zinc in the alloy is 95

TO FIND:

What is the weight of copper in it?

SOLUTION:

Let the weight of copper in it be x

9:5 = 95:x

FORMULA TO FIND:

product of means = product of extremes.

SOLVING BY APPLYING THE FORMULA:

$\rightarrow\sf \: 5 \times 95 = 9 \times x$

$\rightarrow\sf \: x = \dfrac{5 \times 95}{9}$

$\rightarrow\sf \: x = \dfrac{475}{9}$

$\rightarrow\sf \: x = 52.77...grams$

Hence , The weight of copper in it is 52.77 grams.

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Answer 2

$\fbox\pink{A}\fbox\green{N}\fbox\pink{S}\fbox\green{W}\fbox\pink{E}\fbox\green{R}\pink{࿐}$

ʀᴇǫᴜɪʀᴇᴅ ᴀɴsᴡᴇʀ-:

Given:

Ratio of copper and zinc in alloy = 9:5

Weight of copper = 95g

To find:

Weight of zinc = x

Solution:

$\tt\frac{9}{5}$ = $\tt\frac{95}{x}$

$\pink\longrightarrow$9x = 5 × 95

$\pink\longrightarrow$x = $\tt\frac{475}{9}$

$\pink\longrightarrow$x = 52.77(app.)

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