SOLUTION: "Three printing presses can finish a certain job in 90 minutes . How many minutes will it take to five such printing presses to do the same job? "

SOLUTION: "Three printing presses can finish a certain job in 90 minutes . How many minutes will it take to five such printing presses to do the same job? "

Algebra.Com

Question 1008634: "Three printing presses can finish a certain job in 90 minutes . How many minutes will it take to five such printing presses to do the same job? "
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
You consider the concept of press-minutes...
3 presses take 90 minutes...the job takes 270 press-minutes...
Thus 5x = 270 and then
x = 54 minutes
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