SOLUTION: Printer 1 prints a document in 10 minutes, printer prints a document in 22 minutes, if both machines worked together how long would it take to print a document?

Question 621486: Printer 1 prints a document in 10 minutes, printer prints a document in 22 minutes, if both machines worked together how long would it take to print a document?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Printer 1 prints a document in 10 minutes, printer prints a document in 22 minutes, if both machines worked together how long would it take to print a document?
.
Let x = time (minutes) it takes for both
then
x(1/10 + 1/22) = 1
multiplying bothsides by 220:
x(22 + 10) = 220
x(32) = 220
x = 220/32
x = 6.875 minutes
or
x = 6 minutes and 52.5 seconds

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