Subject: General Aptitude · Chapter: Time and Distance · Exam: 2010 · Marks: · Difficulty:
Buses start from a bus terminal with a speed of 20 km/hr at intervals of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at intervals of 8 minutes?
(a)3 km/hr
(b)4 km/hr
(c)5 km/hr
(d)7 km/hr
Answer
Answer (as printed): C
Explanation
Let the speed of the man be x km/hr. Then, Distance covered by the bus in 2 min = Distance covered by the man in 8 min 2 8 2 60 ⇒ 20 × =x× ⇒ x = × = 5 km/hr. 60 60 3 8
Explanation as extracted from the printed page; notation may be imperfect.