Subject: General Aptitude · Chapter: Time and Distance · Exam: 2007 · Marks: · Difficulty:
A and B are two stations 390 km apart. A train starts from A at 10 a.m. and travels towards B at 65 kmph. Another train starts from B at 11 a.m. and travels towards A at 35 kmph. At what time do they meet?
Answer
Answer (as printed):
Explanation
Suppose they meet x hours after 10 a.m. Then, (Distance moved by first in x hrs) + [Distance moved by second in (x – 1) hrs] = 390 TIME AND DISTANCE 567 1 ∴ 65 x + 35 ( x − 1) = 390 ⇒ 100 x = 425 ⇒ x = 4 . 4 So, they meet 4 hrs. 15 min. after 10 a.m., i.e., at 2.15 p.m.
Explanation as extracted from the printed page; notation may be imperfect.