SOLUTION: There are two machines that produce aluminum cans. The newer machine can produce 72000 cans in 200 minutes. It takes the older machine 300 minutes to produce that many cans.If the

Question 96219: There are two machines that produce aluminum cans. The newer machine can produce 72000 cans in 200 minutes. It takes the older machine 300 minutes to produce that many cans.If the two machines work together, how long will it take then to produce 7200 cans?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
There are two machines that produce aluminum cans. The newer machine can produce 72000 cans in 200 minutes. It takes the older machine 300 minutes to produce that many cans.If the two machines work together, how long will it take then to produce 7200 cans?
:
A typical "shared work" problem
:
Let t = time for both machines to produce 72000 cans
:
Let the completed job = 1; (producing 72000 cans)
:
+ = 1
:
Get rid of the denominators, multiply by 600
3t + 2t = 600
5t = 600
t = 600/5
t = 120 minutes working together to produce 72000 cans
:
Not that hard, right?

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