medium · GMAT Quant
Feeder 1 dispenses food for 4 minutes every 9-minute cycle. Feeder 2 dispenses food for 3 minutes every 6-minute cycle. Both start at t = 0.
For how many total minutes during the first 54 minutes is at least one feeder dispensing food?
- 39 minutes
- 51 minutes
- 27 minutes
- 33 minutes
- 12 minutes
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?