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.
in 4 minute 5 people can tie 5 balloons, so 100 balloons need (100/5)*4 minutes = 80 minutes.
thank you very much....I really need your help
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