Question

Maria, an experienced shipping clerk, can fill a certain order in 11 hours. Felipe, a new clerk, needs 13 hours to do the

same job. Working together, how long will it take them to fill the order?

Answer 1

Answer:Maria rate = 1/13 job/hr

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Felipe rate = 1/16 job/hr

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Together rate = 1/x job/h

Step-by-step explanation: rate + rate = Together rate

1/13 + 1/16 = 1/x

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16x + 13x = 13*16

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29x = 13*16

x = 7.17 hrs = 7 hr 10 min 12 seconds (time to do the job together)

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Cheers,

Rubberduck100000.