12575592 12575592

20-05-2022
Mathematics

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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

Respuesta :

mcisneros0505 mcisneros0505

20-05-2022

Answer:

it would be 3 1/2

Step-by-step explanation:

Answer Link

jmatamorosorta jmatamorosorta

20-05-2022

Answer:

D

Step-by-step 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

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