hard · GMAT Quant
Two vehicles start from the same location. Vehicle A travels north at 60 mph. Vehicle B starts 30 minutes later and travels north at 80 mph.
When Vehicle B is 10 miles behind Vehicle A, Vehicle A increases its speed to 70 mph. How many minutes after Vehicle A increases its speed will Vehicle B be exactly 5 miles ahead of Vehicle A?
- 90
- 60
- 45
- 30
- 120
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