Rs aggarwal solutions
Our top 5% students will be awarded a special scholarship to Lido.

Ratio, Proportion and Unitary Method. | Ratio, Proportion and Unitary Method. Exercise 10C

Question 8

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

Looking to do well in your science exam ?  
Learn from an expert tutor. Book a free class!

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

For 1 g of an alloy will contain = 3.5 / 4.5

= 0.777 g of copper

1 g of an alloy will contain 0.777 g of copper

For 18.9 g of an alloy contain = 0.777 × 18.9

= 14.7 g of copper

Hence, 18.9 g of an alloy contains 14.7 g of copper

Set your child up for success with Lido, book a class today!

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta

Question 8

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

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

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

For 1 g of an alloy will contain = 3.5 / 4.5

= 0.777 g of copper

1 g of an alloy will contain 0.777 g of copper

For 18.9 g of an alloy contain = 0.777 × 18.9

= 14.7 g of copper

Hence, 18.9 g of an alloy contains 14.7 g of copper

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
Connect with us on social media!
2021 © Quality Tutorials Pvt Ltd All rights reserved
`