Subject
Quantitative Aptitude
Topic
Speed & Distance
A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
ক)
40 secখ)
42 secগ)
45 secঘ)
48 secExplanation
Formula for converting from km/hr to m/s: X km/hr = (X x (5/18)) m/s. Therefore, Speed = (45 x 5/18) m/sec = 25/2 m/sec. Total distance to be covered = (360 + 140) m = 500 m. Formula for finding Time = (Distance/Speed) Required time = (500 x 2)/25 sec = 40 sec.Related questions
A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:Speed of a boat in standing water is 9 kmph and the speed of the stream is 5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1/10 km and 9 km respectively. The time taken by slower train to cross the faster train in seconds is -A man can row three-quarters of a kilometre against the stream in 11×(1/4) minutes and down the stream in 7×(1/2) minutes. The speed (in km/hr) of the man in still water is:In a 300 m race A beats B by 5 metre or 6 seconds. B's time over the course is -A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?A boat covers a certain distance downstream in 1 hour, while it comes back in 1x(1/2) hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water?A man buys tk 20 shares paying 9% dividend. The man wants to have an interest of 12% on his money. The market value of each share is-