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

Question

DiKsa [7]

2 years ago

11

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? 2.1 hours 2.4 hours 5 hours

Mathematics

2 answers:

sladkih [1.3K] · Answer 1 · 2022-07-13T17:13:45+03:00

sladkih [1.3K]2 years ago

8 0

Answer:

2.4 hours

Step-by-step explanation:

Stels [109] · Answer 2 · 2022-07-13T16:00:39+03:00

Where 1/4 represents Bob and 1/6 represents Ted...
1/4x + 1/6x = 1
Multiply the two so there is no fraction by the GCF of 12.
3x + 2x = 12
Add 3x and 2x.
5x = 12
Divide by 5.
x = 12
Plug this value in.
With that, the answer is 2 hours and 24 minutes with x = 12 meaning 144 minutes.