- A80 km/h
- B69 km/h
- C60 km/h
- D45 km/h
Step-by-Step Solution
Express runs 7 h, passenger 6 h: → km/h. (45 km/h is the passenger train's speed.)
Answer: C) 60 km/h
A passenger train runs at three-fourths the speed of an express. The express leaves a junction at 8 a.m. and the passenger train at 9 a.m., in opposite directions. At 3 p.m. they are 690 km apart. What is the speed of the express?
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