After how many hours B will overtake A ? ?
Two cars A and B start together in the same direction from the same place . The first goes with uniform speed of 40km/hr . The second goes at a speed of 36km/hr in the first hour and increases the speed by 1km/hr each succeeding hour . After how many hours will the second car overtake the first car if both car go non-stop ?
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1 solution
The 1st-5th hours, Car A gets a total of a 10km advantage (4+3+2+1+0). Then, Car B travels faster. From 6th-9th hour, Car B will slowly travel faster until they meet up at 9 hours.