Question

An alloy contains 60% copper 40% zinc and 10% tin in 2 kg of the alloy 500 g more copper was added find the new percentage of all the metals in the alloy​

Answer 1

Answer:

Percentage of copper is 48%

Weight of alloy is 4.2kg

Weight of copper is given by

100

48

×4.2=2.016kg

Percentage of zinc is 24%

Weight of alloy is 4.2kg

Weight of copper is given by

100

24

×4.2=1.008

Percentage of copper is 100−48−24%=28%

Weight of alloy is 4.2kg

Weight of copper is given by

100

28

×4.2=1.176kg