Mathematics, 18.02.2021 20:10, shashayantie6556
It usually takes Mary 6 hours to do the cleaning that Jane can do in 5 hours and Ellen can do in 4 hours. If
Jane and Ellen agree to help Mary so that they can all go on a picnic, how long will it take them to do the
cleaning?
(Use an equation)
Answers: 3
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