Every day I go to the office at the same time and it is known to my driver, who brings the car from home to pick me at the time when I leave office to home. One day I completed my work 40min before than usual time and then call to my driver, He says he left home 20 min before on his usual time. Immediately I start moving towards my home to save time and I meet the car and then reach home by car. If I reach home 30 min before than my usual time. If my home is 30km far then what was my average speed when I started 40 min before till I met the car.
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I don't know sorry I didn't see this question in my previous lesson or class
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