Question

An alloy is to contain copper and zinc in the ratio 9:4. Find the quantity of zinc to be melted with 12/5 kg of copper, to get the desired alloy.​

Answer 1

Step-by-step explanation:

QUESTION -

An alloy is to contain copper and zinc in the ratio 9:4. Find the quantity of zinc to be melted with 12/5 kg of copper, to get the desired alloy.

WHAT WE HAVE =

Alloy = 9:4

Quantity of copper= 12/5

TO GET ZINC =

Alloy = copper +zinc

9:4 = 12/5 kg + zinc

CAN BE WRITTEN AS =

9/4=12/5+zinc

= zinc = 12/5*9/4= 5.4 kg