Question

If 10.5 gm of an alloy of copper and zinc contains 2.1gm of zinc, find the weight of copper

in 42 gm of alloy.​

Answer 1

Answer:

yaar I think it's very veasy u can use your brain...

Answer 2

Answer:

33.6

Step-by-step explanation:

10.5-2.1= 8.4

42× 8.4/10.5{ here do the 'katta kutti method' }