Question

1 kg Alloy has 40% tin and 60% copper. How much tin should be mixed in it to make
the ratio of tin and copper to 60: 40.

Answer 1

1 kg alloy
So, 400g tin and 600g Cu
Required…Tin: Cu=60:40
Tin req. =(600/40)*60
=900g
400g already present
So, 500g is to be added.