Subject: General Aptitude · Chapter: Time and Distance · Exam: 2007 · Marks: · Difficulty:
A person reaches his destination 40 minutes late if his speed is 3 km/hr, and reaches 30 minutes before time if his speed is 4 km/hr. Find the distance of his destination from his starting point.
Answer
Answer (as printed):
Explanation
Let the required distance be x km. 7 Difference in the times taken at two speeds = 70 min = hr. 6 x x 7 \ – = ⇔ 4 x – 3 x = 14 ⇔ x = 14. 3 4 6 Hence, the required distance is 14 km.
Explanation as extracted from the printed page; notation may be imperfect.