Question

Ques. =The ratio of Zinc and

copper in an alloy is 2: 7. If
the weight of the copper
in an alloy is 10.5gm. Then
find the weight of zinc.
O 3gram
O 4gram
O 5gram
O 4.2gram​

Answer 1

Answer:

let's take one 1⃣☝example...

Step-by-step explanation:

ratio of zinc and copper = 7:9

let the ratio be 7x:9x

weight of copper = 12.6kg

=12600g

9x=12600g

x=1400g=1.4kg

7x(weight of zinc)=7*1.4kg

=9.8kg....

you use this formula....