Question : A car moves through 20 m in 3 minutes and the next 50 km at a speed of 100 km/hr. What is the approximate average speed of the car?
Option 1: 22.38 m/s
Option 2: 20 m/s
Option 3: 25.26 m/s
Option 4: 26.28 m/s
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Correct Answer: 25.26 m/s
Solution : Total distance = 20 + 50000 = 50020 m Total time = 3 × 60 + $\frac{50}{100}$ × 60 × 60 = 180 + 1800 = 1980 s Average speed = $\frac{\text{total distance}}{\text{total time}}$ = $\frac{50020}{1980}$ = 25.26 m/s Hence, the correct answer is 25.26 m/s.
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Question : A train moves at a speed of 35 km/hr for the first 2 hours and at a speed of 50 km/hr for the next 4 hours. Find the average speed of the train during the entire journey.
Option 1: 47 km/hr
Option 2: 50 km/hr
Option 3: 45 km/hr
Option 4: 35 km/hr
Question : A car travels at the speed of 40 km/hr for the first hour and 60 km/hr for the next hour. What will be the average speed of the car?
Option 1: 60 km/hr
Option 2: 40 km/hr
Option 3: 50 km/hr
Option 4: 45 km/hr
Question : A bus travels first 100 km at a speed of 100 km/hr. It covers the next 150 km at a speed of 90 km/hr. What is the average speed?
Option 1: 120.50 km/hr
Option 2: 93.75 km/hr
Option 3: 100.25 km/hr
Option 4: 156.25 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 car covers the first 140 km of a journey in 10 hours and the next 260 km in 15 hours. What is the average speed of the Car for the whole journey?
Option 1: 16 km/hr
Option 2: 14 km/hr
Option 3: 10 km/hr
Option 4: 15 km/hr
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