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Mathematics, 10.07.2021 05:50 stef76

Sam can mow a lawn in 40 minutes. Melissa can mow the same lawn in 80 minutes. How long does it take for both Sam and Melissa to mow the lawn if they are working together?

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Sam can mow a lawn in 40 minutes. Melissa can mow the same lawn in 80 minutes. How long does it take...
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