Mathematics, 10.01.2020 11:31 rosemary909

Using a new lawn mower, abby can mow the lawn in 2 hours. her sister carla used an older lawn mower and takes 3 hours to mow the same lawn. how long will it take them if they work together?

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Using a new lawn mower, abby can mow the lawn in 2 hours. her sister carla used an older lawn mower...

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