Multiple choice

Two cars A and B having average speeds of 30 and 40 km/hr, respectively, are 280 km apart. They start moving towards each other at 3.00 pm, at what time, will they meet?

  1. 5 p.m

  2. 6 p.m

  3. 7 p.m

  4. 8 p.m
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The relative speed of the two cars moving towards each other is 30 + 40 = 70 km/h. The time taken to cover the 280 km distance is distance / relative speed = 280 / 70 = 4 hours. Starting at 3:00 pm, they will meet 4 hours later, at 7:00 pm.

AI explanation

Since the cars are moving towards each other, their relative speed is the sum of their speeds: 30 km/hr + 40 km/hr = 70 km/hr. Using the formula Time = Distance / Speed, the time taken to meet is 280 km / 70 km/hr = 4 hours. Adding 4 hours to the start time of 3:00 pm gives the meeting time of 7:00 pm. The result is 7 p.m.

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