Two buses start from the same station at 9.00am and travel in opposite directions along...
MATHEMATICS
WAEC 2020
Two buses start from the same station at 9.00am and travel in opposite directions along the same straight road. The first bus travel at a speed of 72 km/h and the second at 48 km/h. At what time will they be 240km apart?
- A. 1:00 pm
- B. 12:00 noon
- C. 11:00 am
- D. 10:00 am
Correct Answer: C. 11:00 am
Explanation
Let x be the time
Then 72x + 48x = 240
\(\frac{120}{120} \times \frac{240}{120}\)
x = 2hrs
9:00 + 2hrs = 11:00 am
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