Question

3. Brass is an alloy of copper and zinc in the ratio 13: 7. How much o
metal is needed to make 2 kg of brass?​

Answer 1

Answer:

2 kg =2×1000gm=2000gm

copper needed= 13×2000/(13+7) gm

=13×2000/20gm

=13×100gm=1300gm

zinc needed=7×2000/(13+7) gram

=7×2000/20gm

=7×100gm=700gm