Bill is have a party

Mathematics
Tutor: None Selected Time limit: 1 Day

Bill is having a party and wants to have 100 ballons.  It takes 4 minutes to blow up and tie a balloon.  if 5 people are blowing up ballons for the party, how long will it take to blow up and tie all of the ballons for party?  show my work.

Apr 12th, 2015

in 4 minute 5 people can tie 5 balloons, so 100 balloons need (100/5)*4 minutes = 80 minutes.   

Apr 13th, 2015

thank you very much....I really need your help 

Apr 13th, 2015

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Apr 12th, 2015
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Apr 12th, 2015
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