One aero plane started 30 minutes later than the scheduled time from a place 1500 km away from its d...........

Quantitative Aptitude ( CCS) Time & distance

One aero plane started 30 minutes later than the scheduled time from a place 1500 km away from its destination. To reach the destination at the scheduled time the pilot had to increase the speed by 250 km/hr. What was the speed of the aeroplane per hour during the journey?

650

750

850

1000

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Explanation:

Use the option
Distance = 1500 km
Let original speed = 750 km/hr.
Original time taken = 2 hr.
Now, delay in time = 30 min.
Increased speed = (750 + 250) = 1000 km/hr

Hence, option 4 is the correct answer.