6. 

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:

A. 1 hour
B. 2 घंटे
C. 3 घंटे
D. 4 घंटे

7. 

A man complete a journey in 10 hours. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24 km/hr. Find the total journey in km.

A. 220 km
B. 224 किमी
C. 230 किमी
D. 234 किमी

8. 

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then the speed of the first train is:

A. 70 km/hr
B. 75 किमी / घंटा
C. 84 किमी / घंटा
D. 87.5 किमी / घंटा

9. 

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:

A. 35.55 km/hr
B. 36 किमी / घंटा
C. 71.11 किमी / घंटा
D. 71 किमी / घंटा

10. 

A car travelling with of its actual speed covers 42 km in 1 hr 40 min 48 sec. Find the actual speed of the car.

A.
17 6 km/hr
7
B. 25 किमी / घंटा
C. 30 किमी / घंटा
D. 35 किमी / घंटा