Two stations P and Q are 110 ; km apart on a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The train starting from $P$ travels for $1 \; hour$ (from $7 \; am$ to $8 \; am$) at a speed of $20 \; km/h$. Distance covered by the first train

Vedclass · Accepted Answer

$10 \; am$

Vedclass · Answer

(B) The train starting from $P$ travels for $1 \; hour$ (from $7 \; am$ to $8 \; am$) at a speed of $20 \; km/h$. Distance covered by the first train by $8 \; am = 20 \; km/h 	imes 1 \; h = 20 \; km$. Remaining distance between $P$ and $Q$ at $8 \; am = 110 \; km - 20 \; km = 90 \; km$. Since the trains are moving towards each other,their relative speed $= 20 \; km/h + 25 \; km/h = 45 \; km/h$. Time taken to meet after $8 \; am = \frac{	ext{Remaining Distance}}{	ext{Relative Speed}} = \frac{90 \; km}{45 \; km/h} = 2 \; hours$. Therefore,the trains will meet at $8 \; am + 2 \; hours = 10 \; am$.

Two stations $P$ and $Q$ are $110 \; km$ apart on a straight line. One train starts from $P$ at $7 \; am$ and travels towards $Q$ at $20 \; km/h$ speed. Another train starts from $Q$ at $8 \; am$ and travels towards $P$ at a speed of $25 \; km/h$. At what time will they meet?

Similar Questions

$A$ train moves past a telegraph post and a bridge $264 \; m$ long in $8 \; seconds$ and $20 \; seconds$ respectively. What is the speed of the train (in $km/hr$)?

$A$ train $240 \; m$ long passed a pole in $24 \; s$. How long (in $s$) will it take to pass a platform $650 \; m$ long?

Two trains running in opposite directions cross a man standing on the platform in $27 \;seconds$ and $17 \;seconds$ respectively, and they cross each other in $23 \;seconds$. The ratio of their speeds is

Two trains are running at $40 \; km/hr$ and $20 \; km/hr$ respectively in the same direction. The faster train completely passes a man in the slower train in $5 \; seconds$. What is the length (in $m$) of the faster train?

Two trains $140 \; m$ and $160 \; m$ long run at a speed of $60 \; km/hr$ and $40 \; km/hr$ respectively in opposite directions on parallel tracks. The time (in $seconds$) which they take to cross each other is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module