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Mathematics 14 Online
OpenStudy (anonymous):

Lisa can shovel snow from her driveway in 50 minutes. Tom can do the same job in 65 minutes. How long would it take Lisa and Tom to shovel the driveway if they work together?

OpenStudy (radar):

This can be solved by the "reciprocal of the sum of the reciprocals. 1/(1/50+1/65)=time for both to shovel driveway in minutes.

OpenStudy (anonymous):

can someone help me

OpenStudy (radar):

around 28.7 minutes

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