SOLUTION: A new printing press can complete the weekly edition of a news magazine in 10 hours. An older printing press requires 15 hours to do the same task. how long would it take to print
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Question 888792: A new printing press can complete the weekly edition of a news magazine in 10 hours. An older printing press requires 15 hours to do the same task. how long would it take to print the weekly with both presses operating Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! A new printing press can complete the weekly edition of a news magazine in 10 hours. An older printing press requires 15 hours to do the same task. how long would it take to print the weekly with both presses operating
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let x=how long it would take to complete the job with both presses working
1/10=work rate of new printing press
1/15=work rate of older printing press
1/x=work rate with both printing presses operating
sum of individual work rates=work rate working together
1/10+1/15=1/x
3/30+2/30=1/x
5/30=1/x
x=30/5=6
how long it would take to complete the job with both presses working=6 hrs
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