Multiple choice

A high-speed train travels at an impressive velocity of 300 kilometres per hour. Along its route, the train follows a pattern of covering 45 kilometres and then taking a brief halt for 3 minutes. With this operational rhythm, how many minutes will it require to traverse a 1,350-kilometre journey?

  1. 265 minutes

  2. 285 minutes

  3. 295 minutes

  4. 357 minutes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The train travels 1350 km at 300 km/h, taking 4.5 hours (270 minutes). It stops every 45 km. Number of stops = (1350 / 45) - 1 = 29 stops. Total time for stops = 29 * 3 = 87 minutes. Total time = 270 + 87 = 357 minutes.

AI explanation

The total number of 45 km intervals in a 1350 km journey is found by division: 1350 / 45 = 30 intervals. According to the pattern, the train takes a 3-minute halt after each of the first 29 intervals, yielding a total halt time of 29 * 3 = 87 minutes. The moving time is calculated using the formula time equals distance divided by speed, which is 1350 / 300 hours, converting to 270 minutes. The total time required for the journey is the sum of moving and halt times: 270 + 87 = 357 minutes.

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