Working alone, carlos can oil the lanes in a bowling alley in five hours. Jenny can oil the same lanes in nine hours. If they worked together how long would it take them?

Question

asked Feb 10, 2019 129k views

2 Answers

Uchar · Answer 1 · 2019-02-15T10:52:34+0000

USe the same method as in ur last question

1/5 + 1/9 = 1/x where x is the required time

First step is to multiply through by 45x

then solve for x