Jack usually mows his lawn in 6 hours Marilyn can mow the same yard in 4 hours How much time would it take for them to mow the lawn together?

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Answer 1 · 2016-12-26T03:59:41

Consider how much work can be done in 1 hour.

#1/4 + 1/6 = 1/x#

#(6x + 4x)/(24x) = 24/(24x)#

#10x = 24#

#x = 2.4#

Then it takes Jack and Merilyn #2.4# hours to mow the lawn together.

Hopefully this helps!