Question

Bob and Ted are in the plumbing business. Bob can do the plumbing hook-up for a new house in 4 hours; Ted does the same job in 6 hours. If they work together, how long will they take to hook up the plumbing in one house? 5 hours 2.4 hours 2.1 hours

Answer 1

5 Hours

Explanation:

Bob needs atleast 4 hours to do his work

Ted needs atleast 6 hours

Bob is going to help ted speed up a little

2.4 and 2.1 are to fast because bib needs 4 hours and ted needs 6 so the meet in the middle and get 5.

Hope this helps!