Question

A scientist makes a type of brass by mixing copper and zinc in the ratio of 8 to 2. How many kilograms of copper and zinc does he need to make 40 kilograms of brass?

Answer 1

Explanation:

its 69 and get a tuterФ⊄⊇⊇⊇∴Ф

Answer 2

32kg of brass and 8kg of copper

Explanation:

Add the ratios together to find the total:

2:8 = 2 + 8 = 10

Now, divide the total kg requirement of brass (40) by the above value:

40 ÷ 10 = 4

So each ratio must be multiplied by 4 so that the total kg of brass is 40:

8 * 4 = 32kg of brass

2 * 4 = 8kg of copper

Hope this helps!