alleryAt 40 km/h a trip ends 1 h late; at 60 km/h, 1 h early. Scheduled duration?
A6 hours
B5 hours
C3 hours
D4 hours
Answer & Solution
Correct answer: B. 5 hours
For distance d, d/40 − d/60 = 2 gives d = 240 km, so the scheduled duration is 240 ÷ 40 − 1 = 5 hours.
Keep practising Time, Speed and Distance
Browse all Time, Speed and Distance questions for RPF Constable, or explore more Arithmetic topics.
Related questions
Motion: combine the cluesMotion: choose the resultA boat’s still-water speed is 12 km/h. It covers 30 km downstream and 18 km upstream in 4 A 120 m train at 54 km/h overtakes a 180 m train moving the same way in 60 s. Slower trainTwo runners start together on a 400 m circular track at 5 and 3 m/s in the same direction.In a 200 m race A beats B by 20 m. A runs at 10 m/s. What is B’s speed?A boat moves at 12 km/h in still water; the stream is 3 km/h. Time for 27 km downstream anTrains 180 m and 220 m long move oppositely at 54 and 36 km/h. Time to cross completely?