Question : Study the given bar graph and answer the question that follows.
The bar graph shows the distance (in km) between two cities and the speeds (in km/hr) of a person to cover the respective distances.

What is the approximate average speed of the person while travelling from city A to city F?

Option 1: 28.55 km/hr

Option 2: 23.60 km/hr

Option 3: 21.78 km/hr

Option 4: 19.47 km/hr

Question : Ram travels with speeds of 15 km/hr, 10km/hr, and 12 km/hr for three equal distances. What is his average speed if the total distance travelled by him is 180 km?

Option 1: 15 km/hr

Option 2: 18 km/hr

Option 3: 20 km/hr

Option 4: 12 km/hr

Question : A car covers 3 successive 2 km stretches at speeds of 20 km/hr, 40 km hr, and 60 km/hr respectively. Its average speed is:

Option 1: 38.56 km/hr

Option 2: 42.12 km/hr

Option 3: 32.72 km/hr

Option 4: 40.50 km/hr

Question : A speeding car travelling at 40 km/hr decides to slow down to 30 km/hr after covering half the distance. What is the average speed?

Option 1: $30$ km/hr

Option 2: $\frac{120}{7}$ km/hr

Option 3: $\frac{240}{7}$ km/hr

Option 4: $35$ km /hr

Question : Two trains 100 metres and 95 metres long, respectively pass each other in 27 seconds when they run in the same direction and in 9 seconds when they run in opposite directions. The speeds of the two trains are:

Option 1: 44 km/hr, 22 km/hr

Option 2: 52 km/hr, 26 km/hr

Option 3: 36 km/hr, 18 km/hr

Option 4: 40 km/hr, 20 km/hr

Question : A person walks 10 km at a speed of 2.5 km/hr, then runs 10 km at a speed of 5 km/hr and then goes 30 km by bus at the speed of 30 km/hr. What is the average speed of the man?

Option 1: 9 km/hr

Option 2: 8.25 km/hr

Option 3: 7.14 km/hr

Option 4: 7 km/hr