Class VIII

A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is:
  1. 35.55 km/hr
  2. 36 km/hr
  3. 71.11 km/hr
  4. 71 km/hr
In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:
  1. 1 hour
  2. 2 hours
  3. 3 hours
  4. 4 hours
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
  1. 2
  2. 10
  3. 43
  4. 20
Robert is travelling on his cycle and has calculated to reach point A at 2 P.M. if he travels at 10 kmph, he will reach there at 12 noon if he travels at 15 kmph. At what speed must he travel to reach A at 1 P.M.?
  1. 8 kmph
  2. 11 kmph
  3. 12 kmph
  4. 14 kmph
An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1 hours, it must travel at a speed of:
  1. 300 kmph
  2. 360 kmph
  3. 600 kmph
  4. 720 kmph
Time Elapsed

HR : MIN : SEC
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