1.

Three cars started running simultaneously from a point on a circular track. They took 540 secs, 400 secs and 360 secs to complete one round. After how much time will they meet again for the first time?1). 180 min2). 190 min3). 184 min4). 186 min

Answer»

LCM of 540, 400, and 360 = 24 × 33 × 52 = 16 × 27 × 25 = 10800 SEC

MEETING time of cars = LCM of (540, 400, 360) = 10800 sec = 10800/60 min = 180 min


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