Question 456091
It takes Maria 1 & 1/2 hours to deliver newspapers every morning. Hal can deliver the papers alone in one hour. How fast can they deliver the newspapers if they work together?
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Maria DATA:
time = 3/2 hr/job ; rate = 2/3 job/hr
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Hal DATA:
time =  1 hr/job ; rate = 1 job/hr
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Together DATA:
time = x hr/job ; rate = 1/x job/hr
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Equation:
rate + rate = together rate
2/3 + 1 = 1/x
5/3 = 1/x
x = 3/5 hr
x = 36 minutes to do the job together
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Cheers,
Stan H.
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