PLEASE HELP! Ordinary brass contains 61.6% copper, 2.9% lead, 0.2% tin, and 35.3% zinc. How many pounds of each metal would be in 160 lb. of brass?

There would be 98.56 lbs of copper, 4.64 lbs of lead, 0.32 lbs of tin, and 56.48 lbs of zinc.

61.6% = 0.616; 160(0.616)=98.56
2.9% = 0.029; 160(0.029) = 4.64
0.2% = 0.002; 160(0.002) = 0.32
35.3% = 0.353; 160(0.353) = 56.48