Saved Bookmarks
| 1. |
Two stations are 420 km apart from each other. A train starts from A at a speed of 36 km/hr. At the same time, another train starts from B at a speed of 24 km/hr. At what distance from the station B will the trains meet?1). 144 km2). 168 km3). 210 km4). 254 km |
|
Answer» Let the trains meet at a distance of ‘x’ km from B. Distance of meeting POINT from A = 420 – x To reach the meeting point, time taken by A = time taken by B (Distance travelled by A/ speed of TRAIN from A) = (distance travelled by B/ speed of train from B) ⇒ (420 – x)/36 = x/24 ⇒ 10080 – 24x = 36x ⇒ 24x + 36x = 10080 ⇒ 60X = 10080 ⇒ x = 10080/60 = 168 km. ∴ Trains meet at a point 168 km from station B. |
|