Two towns are 300 km apart. A bus leaves each town at the same time, heading towards the other at 60 km/h and 40 km/h. After how many hours do they meet?
Correct answer: C. 3 hours
Moving towards each other, they close the gap at 60 + 40 = 100 km per hour. They meet after 300 ÷ 100 = 3 hours. In that time, the faster bus covers 180 km and the slower one 120 km, which add up to 300 km.
medium