medium · GMAT Quant
Pump A can fill a pool in 8 hours, and Pump B can fill the same pool in 12 hours. Both pumps run together for 3 hours, after which Pump A is turned off and Pump B finishes the job alone.
What is the total time elapsed from the start of the filling to its completion?
- 13.2 hours
- 4.8 hours
- 7.5 hours
- 6 hours
- 12 hours
Sign up free to see the explanation and track your rank →
More GMAT Quant practice
- Including both endpoints, how many distinct integer price points are in this range?
- Which of the following expressions must result in a positive value?
- Which property of arithmetic justifies that first step?
- Which of the following must also be an even integer?
- Which of the following inequalities correctly represents this range?
- Which of the following includes the number 0?
- How many unique meal combinations can a customer create?
- What is the probability that the lightbulb is functional?