Mathematics

Mathematics, 19.01.2020 21:31, yqui8767

Working alone, elisa can sweep a porch in 11 minutes. pranav can sweep the same porch in 13 minutes. how long would it take if they worked together.
a. 5.96 minutes
b. 5.86 minutes
c. 5.21 minutes
d. 4.87 minutes

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