WUI I RU CUVET 240 km?
3.
7. The distance between two places is 120 km. A car travelling at a certain speed can cover
the distance in 2 hours 30 minutes. By how many km/h should the speed of the car be
increased for it to take 30 minutes less to cover the distance?
8. Two cars start from the same place at the same time in the same direction. The speed of
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Answer:
Distance = Rate x Time
From the question we know distance and time.
2:30 = 2.5 hours
D / T = R; therefore; 120 / 2.5 = original rate (speed) = OR
…30 minutes less than 2:30 = 2:00 hours = 2.0 hours
Also from the question we know distance and “new time”
Rate (speed) = Distance / Time
120 / 2.0 = new rate = NR
NR - OR = increase in speed required = your answer in kph
You can do the math.
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