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A car travels 1 / 3 of a distance in 2 hours, 1 / 4 of remaining in 1 hour and remaining in 3 hours. If average speed of the car in the whole journey is 50 km / hr. Find the total distance covered by the car?1. 4002. 1503. 6004. 3005. 450 |
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Answer» Correct Answer - Option 4 : 300 Given∶ A car travels 1 / 3 of a distance in 2 hours, 1 / 4 of remaining in 1 hour and remaining in 3 hours. Average speed of the car in the whole journey is 50 km / hr Formula used∶ Average speed = Total distance Travelled / total time Calculations∶ Let the total distance be x And the total time = 1 + 2 + 3 = 6 hr Average speed = \(\frac{{\rm{x}}}{6}\) ---(1) Since average speed is 50 km / hr, on equating equation (1) with 50 km / hr, we get ⇒ x = 300 km |
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