6.

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?
A. 9 B. 10
C. 12 D. 20
Answer and Explanation
Answer: Option B
Explanation: Due to stoppages, it covers 9 km less.

Time taken to cover 9 km = (9/54 x 60) min = 10 min.

7.

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 hours
C. 3 hours D. 4 hours
Answer and Explanation
Answer: Option A
Explanation: Arithmetic Aptitude Questions and Answers
8.

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 km
C. 230 km D. 234 km
Answer and Explanation
Answer: Option B
Explanation:

9.

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

A. 70 km/hr B. 75 km/hr
C. 84 km/hr D. 87.5 km/hr
Answer and Explanation
Answer: Option D
Explanation: Let the speed of two trains be 7x and 8x km/hr.

Then, 8x = 400/4 = 100

x = 100/8 = 12.5

Speed of first train = (7 x 12.5) km/hr = 87.5 km/hr.

10.

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 km/hr
C. 71.11 km/hr D. 71 km/hr
Answer and Explanation
Answer: Option C
Explanation: Total time taken = (160/64 + 160/80 hrs. = 9/2 hrs.

Average speed = (320 x 2/9) km/hr = 71.11 km/hr.