4. Two places A and B are 120 km apart on a highway. A car starts from A and another car starts from B at the same time. If they travel in the same direction they meet in 6 hours and if they travel in the opposite direction they meet in 1 hour 12 minutes. Find the speed of the cars.

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u have answered but we have to do taking x and y


Distance = 120 km. Time taken = 6 hours. Speed of car starting fromA=120/6. =20 km/hour. Speed of car starting from B=distance/speed of car starting from A. =120/20. =6 km/hour. The above solution is for same direction. Time taken = 4320 seconds. Speed of both the cars= 120000/4320. =27.77 m/second. The speed is same because they are in opposite direction.
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