The circumference of a park is 750m. A and B start walking from the same point in the same direction at 6.75 kmph and 4.75 kmph. Among the given options, In what time will they meet each other?
Since they are moving in same direction, so their relative speed = 6.75 - 4.75 = 2kmph So they will meet after every =distance/speed = 0.75 km / ( 2kmph) = 0.75 /2 hrs = 0.75/2 * 60 = 22.5 Minutes So among the given option , only 3 hrs means 180 min is a multiple of 22.5 min hence they will meet after 3 hrs.
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