by running 900 meter and walking another 900 metres, a man covers a distance of 1800 m in 21/2 minutes. If he had run 20% slower and walked 20%faster, he would have taken just 10minutes to cover the distance. Find the speed while walking and by running.
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Step-by-step explanation:
the two objects move in the same direction with speeds u and v, then Relative speed = difference between their speeds = .
11. Time required for both objects to meet each other = =
In the above case, time required for the police to catch the thief= = seconds.
Distance covered by the police by that time he catches the thief = = 160 meters
Distance covered by the thief by that time he was caught by the police = = 120 meters
12. If the two objects start from A and B with speeds u and v respectively, and after crossing each other take a and b hours to reach B and A respectively, then u : v..
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