Question : A car, during its entire journey of 5 hours, travels the first 45 minutes at a certain speed, the next 75 minutes at a speed of 85 km/hr, and the last 3 hours at a speed of 70 km/hr. During its entire journey, the average speed of the car is found to be 73 km/hr. What is the speed (in km/hr) of the car during the first 45 minutes?

Option 1: 65

Option 2: 68

Option 3: 62

Option 4: 72

Question : During a journey of 120 km, Rahi drives the first 60 km at the speed of 60 km/hr, the next 30 km at 60 km/hr and the remaining 30 km at the speed of 30 km/hr. Determine the average speed.

Option 1: 48 km/hr

Option 2: 33.33 km/hr

Option 3: 50 km/hr

Option 4: 40 km/hr

Question : On a straight road, a bus is 30 km ahead of a car travelling in the same direction. After 3 hours, the car is 60 km ahead of the bus. If the speed of the bus is 42 km/h, then find the speed of the car.

Option 1: 67 km/h

Option 2: 72 km/h

Option 3: 65 km/h

Option 4: 59 km/h

Question : A car travels with a speed of 21 m/sec in the first 10 minutes, 9.0 km in the next 10 minutes and 10 km in the last 10 minutes of its journey. What is the average speed of the car in km/hr during its entire journey?

Option 1: 60.0 km/hr

Option 2: 63.2 km/hr

Option 3: 62.0 km/hr

Option 4: 65.3 km/hr

Question : In a journey of three unequal laps, a car covers a distance of 200 km in 4 hr in the first lap, while another 162 km at the speed of 15 m/s in the second lap. It covered the remaining distance of the final lap in 4 hr such that the average speed of the car for the entire journey was 50 km/hr. What was the speed of the car on the third lap of the journey?

Option 1: 47 km/hr

Option 2: 52 km/hr

Option 3: 42 km/hr

Option 4: 45 km/hr