Question

The ratio of zinc to copper in an alloy is 2 : 5 . Find the quantity of copper in 4.2kg of the alloy.​

Answer 1

Answer:

2/7*42

2*6

1.2g

5/7*42

5*6

3g

Answer 2

Answer: Copper = 10.5kgs

Step-by-step explanation: So we do,

2x = 4.2kg

x = 4.2/2

x = 2.1

To find copper,

5x = ?

5 times 2.1

= 10.5