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Mathematics, 29.05.2020 21:05 tottresstrinity

Sam can mow his yard in 5 hours. Lucy can mow the same yard in 3.5 hours. How long will it take them to mow the lawn together?

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Sam can mow his yard in 5 hours. Lucy can mow the same yard in 3.5 hours. How long will it take them...
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