word problem... algebra help?
a meat distributor paid 2.50$ per pound for hamburgers and $4.50 per pound for ground sirloin. How many pounds of each did he use to make 100 pounds of meat mixture that will cost 3.24$ per pound?
a meat distributor paid 2.50$ per pound for hamburgers and $4.50 per pound for ground sirloin. How many pounds of each did he use to make 100 pounds of meat mixture that will cost 3.24$ per pound?
Comments
2.5h + 4.5s = 324
2.5h = 324 - 4.5s
h = (324 - 4.5s)/2.5
h + s = 100
(324 - 4.5s)/2.5 + s = 100
324 - 4.5s + 2.5s = 250
324 - 2s = 250
-2s = -74
s = 37 <-- sirloin
h = (324 - 4.5(37))/2.5
h = (324 - 166.5)/2.5
h = 157.5/2.5
h = 63 <-- hamburger