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When a man travels equal distance at speed x km/h and y km/h, his average speed is 4 km/h. But when he travels at these speeds at equal time, his average speed is 4.5 km/h. Find the difference in the two speeds. |
| Answer» When a man travels equal distance at speed x km/h and y km/h, his average speed is 4 km/h. But when he travels at these speeds at equal time, his average speed is 4.5 km/h. Find the difference in the two speeds. | |