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Does one get this sort of problem in GMAT? I hope not. [#permalink]
24 Sep 2004, 07:57
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Does one get this sort of problem in GMAT? I hope not.
A car traveling at a certain constant speed takes 2 seconds longer to travel 1 kilometer than it would take to travel 1 kilometer at 75 kilometers per hour. At what speed, in kilometers per hour, is the car traveling?
SInce it travels 75 km in 1 hr, hence 1 km it travels in 48 seconds. At the new speed it travels 1 km in 48+2 = 50 seconds. Hence the distance travelled in 1 hr or 3600 seconds is: 3600/50 = 72 km/hr...