Mathematics, 03.10.2019 02:30, westlakebuddy7884

Lea can wax a floor in 14 minutes. mark can wax the same floor in 16 minutes. how long would it take them if they worked together? can clean the same attic in 9 hours. find can revarnish a pipe

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Lea can wax a floor in 14 minutes. mark can wax the same floor in 16 minutes. how long would it take...