4 Joe can finish the class project in 10 hours and Sam can finish the same job in 8 hours. If Joe starts at 1pm and Sam helps him 2 hours later will he have time to watch his TV show at 8 pm?Joe can finish 1/10th of the job per hourSam can finish 1/8th of the job per hour but starts 2 hours later
5 Joe’s work plus Sam’s work has to equal to 1(the whole job) Joe and Sam must finish the job in lessthan 7 hours. Since h is less than seven yes, he can watch his show.
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