Mathematics, 04.07.2019 09:00, Suhayb981

Wilma can mow a lawn in 90 minutes. bullwinkle can mow the same lawn in 60 minutes. how long does it take for both wilma and bullwinkle to mow the lawn if they are working together?

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Wilma can mow a lawn in 90 minutes. bullwinkle can mow the same lawn in 60 minutes. how long does it...