Question 17
Ratio, Percentages and RatesTwo 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 pm
- B.12:00 noon
- C.11:00 am
- D.10:00 am
Show the answer and explanation
Answer: C (11:00 am)
Explanation
Moving apart, the gap grows by 72 + 48 = 120 km each hour. 240 km takes 2 hours, so the time is 11:00 am.