hard · GMAT Quant
At 10:00 a.m., car P is 20 miles west of a rest stop and drives east at a constant 60 mph. At 10:30 a.m., car Q is 10 miles west of the same rest stop and drives east at a constant 90 mph. Both cars stay on the same straight road.
At what time does Q catch P?
- 10:50 a.m.
- 11:10 a.m.
- 11:30 a.m.
- 12:00 noon
- 12:20 p.m.
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