Question
The distance between two towns is covered in 9 hours at
a speed of 60 kmph. By how much should the speed (in km/h) he increased so that 1 hour of the travelling time is saved?Solution
Distance = 60 km/h × 9 hours = 540 km Find a new speed for 8 hours: new speed = 540/8 km/h= 67.5 km/h  Increase in speed- Increase = 67.5 km/h -60 km/h = 7.5 km/h Â
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