Question

Working alone, Elisa can sweep a porch in 11 minutes. Pranav can sweep the same porch in 13 minutes. Find out how long it would take them if they worked together.

A) 5.96 minutes
B) 5.21 minutes
C) 5.86 minutes
D) 4.87 minutes

Answer 1

Your answer is A 5.96 minutes

Answer 2

Answer is A

Explanation:

Elisa, e = 11mins

Prenav, p = 13mins

time to finish, t

1 = t( 1/11 + 1/13) = t (24/143)