Asked by Anonymous

if a jet printer prints an articlae in 12 minutes and a laser printer prints the same in 29 minutes if they work together how many minutes
Answered by Henry
t = 12*29 / (12+29) = 8.49min.

Or
1/t = 1/12+1/29 = 0.1178,
t = 1/0.1178 = 8.49min.
Answered by Henry
post.
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