0 vote
Two cars, A and B started moving from the same point at the same time towards opposite direction (A toward North and B towards South). If the speed of car A is 34.5 kmph and that of car B is 41.5 kmph. after how much time will they be 684 km apart? (in hours)
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Two cars, A and B started moving from the same point at the same time towards opposite direction (A toward North and B towards South). If the speed of car A is 34.5 kmph and that of car B is 41.5 kmph. after how much time will they be 684 km apart? (in hours)
1). 7
2). 11
3). 12
4). 8
3 answers
4 vote
Solution
$\because$ The cars are moving in opposite direction
$\therefore$ Relative speeds = 34.5 + 41.5 = 76 km/hr
=> Required time = $\frac{684}{76} = 9$ hrs
2 vote
Solution
$\because$ The cars are moving in opposite direction
$\therefore$ Relative speeds = 34.5 + 41.5 = 76 km/hr
=> Required time = $\frac{684}{76} = 9$ hrs