The pump used to fill the water tank on a fire truck takes 40 minutes to fill the tank. if the pump sending water to the hose is on, it takes 60 minutes to fill the tank. if the pump filling the water tank is off, how long does the pump sending water to the hose take to empty the tank? a) 120 minutes b) 60 minutes c) 30 minutes d) 24 minutes

A) 120 minutes

Step - by - step explanation:

The pump used to fill the water tank on a fire truck takes 40 minutes to fill the tank.

If the pump sending water to the hose is on, it takes 60 minutes to fill the tank.

Let's "x" be the amount of time to taken the pump sending water to the hose take to empty the tank.

1/40 - 1/x = 1/60

1/x = 1/40 - 1/60

1/x = (3 - 2)/120             Taking LCM as 120

1/x = 1/120

Cross multiplying, we get

120 = 1x

x  = 120/11

x = 120 minutes

Thank you.

i would be happy to . most people on would also love to i'm sure. if you just want someone who has done algebra before and want a little more personal relationship than just begging strangers for , i can certainly be of service. i do have college myself so i might not be 24/7.

thus, the first answer choice, y = sec x, is the correct one