Question

an alloy contains Copper and Zine in the ratio 7 :3 .if it's contain 12.6 g of copper ,how much does this alloy weight?
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Answer 1

Answer:

5.4 Kg

Step-by-step explanation:

let the weight of copper be 7x and zinc be 3x

then 7x =12.6

x = 1.8

therefore weight of zinc =

$3 \times 1.8 = 5.4$

Answer 2

Answer:

5.4kg

Step-by-step explanation:

Copper=12.6g

ratio 7:3, 7 is copper and 3 is zinc.

let x be quantity of 1 ratio

7x=12.6

x=12.6/7

x=1.8g

ratio of zinc in 7:3 is 3

3x=Zinc

Zinc = 3*1.8g

Zinc=5.4g

Total weight of alloy=12.6+5.4

=18.0

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