Quant Question Of The Day: 129
Time Speed and Distance
On a 12km circular track, three girls go-carting simultaneously in the clockwise direction at 3:45 pm. If the three girls move at constant speed of 5m/s, 7.5m/s and 2.5m/s, when will they meet at the starting point for the first time ?
1. 5:18 pm
2. 6:45 pm
3. 5:05 pm
4. None of these
Speed of those three girls in kpmh are 18, 27 and 9 respectively. = 2/3 , 4/9 and 4/3 hrs LCM of 2/3 , 4/9 and 4/3 = 4/3 = 1 hr 20 mins Hence, they will meet at 5: 05 pm.
The time taken by them to complete one revolution is 12/18 , 12/27 , 12/9 hr respectively.
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Quant Question Of The Day: 128
Quant Question Of The Day: 127
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