Civil Service Exam Reviewer · Word Problems · hard
A delivery van traveled 360 km in 7 hours. Part of the trip was at 60 km/h and the rest at 30 km/h. How many hours did it travel at 60 km/h?
- 2 hours
- 5 hours
- 3.5 hours
- 3 hours
Answer
B. 5 hours
Solution
60t + 30(7 − t) = 360 → 30t = 150 → t = 5 hours.
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