Question

an arc contain 23% copper to get 69% of copper The quantity of arc required is??​

Answer 1

Answer:

Step-by-step explanation:

69\23=3

It means that every 1% contains 3%copper

So quantity of copper required will be 100\3 = 33x1\3%approx

Answer 2

The quantity of arc required is 3.

Step-by-step explanation:

An arc contains 23% of copper.

Two arc contain 23% x 2 = 46% of copper.

Three arc contain 23% x 3 = 69% of copper.

Hence, the quantity of arc required is 3.