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A plumber can install the pipes in a bathroom in 4 hours. A different plumber needs 5 hours to do the same job. If both plumbers work together, how many hours will it take to install the pipes? A. 1 B.
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A plumber can install the pipes in a bathroom in 4 hours. A different plumber needs 5 hours to do the same job. If both plumbers work together, how many hours will it take to install the pipes?

A. 1
B. 2 2/9
C. 3 1/2
D. 4 1/2

User Anderson Matos
by
6.1k points

2 Answers

3 votes

Answer:

D

Explanation:

If you add 4+5=9 and then divide 9÷2, ( 2 is the number of digits you used) then the answer would be 4 1/2

User Quazi Irfan
by
7.0k points
11 votes

Answer:

it would be 3 1/2

Explanation:

User Brian McFarland
by
7.0k points
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