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WAEC Mathematics 2025 Objective — Question 17

Question 17 of 51 from the West African Examinations Council (WAEC) Mathematics 2025 Objective paper, with the correct answer and a full explanation.

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Two buses start from the same station at 9:00 a.m. and travel in opposite directions along the same straight road. The first bus travels at a speed of 72 km/h and the second at 48 km/h. At what time will they be 240 km apart?

  • A. 1:00 p.m.
  • B. 12:00 noon
  • C. 11:00 a.m.Correct
  • D. 10:00 a.m.

Explanation

Combined speed = 72+48=120 km/h. Time to be 240km apart = 240/120 = 2 hours. 2 hours after 9:00am is 11:00am.

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