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
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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