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To arrive at its destination on time, a bus should have maintained a speed of \(V\) kmh throughout its journey. Instead,

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by Gmat_mission » Tue Nov 10, 2020 7:33 am

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To arrive at its destination on time, a bus should have maintained a speed of \(V\) kmh throughout its journey. Instead, after going the first third of the distance at \(V\) kmh, the bus increased its speed and went the rest of the distance at \(1.2\cdot V\) kmh. If, as a result, the bus arrived at its destination \(X\) minutes earlier than planned, what was the actual duration of the trip?

(1) \(V=60\)
(2) \(X=20\)

Answer: B

Source: GMAT Club Tests
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