Answer:
584
Step-by-step explanation:
25 × 8 + 20 × 8 + 8 × 20 ÷ 2 + 8 × 8 + 20 × 8 ÷ 2 =
Converting percentage to a decimal :
50%= 50 / 100 = 0.5
What is 50% of 15
=50% * 15
=0.5 * 15
=7.5
Zinc = 7/18
Divide 4.9 by 7 = 0.7
Multiply by 18 = 12.6
The answer is 12.6 lbs of alloy. Sorry if I'm wrong