Question

a flooded by area is pumped dry in 45 minutes using three idential pumps;if one of the pumps failed to work,how long would it takes to pump the area city?

Answer 1

[AI-generated answer — Bot GPT 3.5]

If three identical pumps can pump the flooded area dry in 45 minutes, it means that each pump can pump 1/3 of the area in 45 minutes.

So, if one pump is not working, the remaining two pumps would have to do the work.

Therefore, it would take 45 minutes * 3 pumps / 2 pumps = <<45*3/2=67.5>>67.5 minutes for the remaining two pumps to pump the flooded area dry.