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Gurney can mow the lawn in 3 1/2hours. Moneo can mow the lawn in 4 1/4 hours. How long will it take them to mow the lawn if they work together?​

 Feb 4, 2020

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 #1
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1 /3.5  +  1/4.25  =0.521 [This means that working together, they can finish 0.521 of the job in 1 hour]

So, to finish the whole job, we take the reciprocal of that, or:

T =1 / 0.521 =1.919 hours, or ~ 1 hour and 55 minutes.

 Feb 4, 2020
edited by Guest  Feb 4, 2020
 #1
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+1
Best Answer

1 /3.5  +  1/4.25  =0.521 [This means that working together, they can finish 0.521 of the job in 1 hour]

So, to finish the whole job, we take the reciprocal of that, or:

T =1 / 0.521 =1.919 hours, or ~ 1 hour and 55 minutes.

Guest Feb 4, 2020
edited by Guest  Feb 4, 2020

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