Two trains of equal length are running on… | Answer

Subject

Quantitative Aptitude

Topic

Speed & Distance

Two trains of equal length are running on parallel lines in same direction at the rate of 46 km/h and 36 km/h. The faster train passes the slower train in 36 seconds. The length of the each train is:
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ক)

500 meters

খ)

74 meters

গ)

38 meters

ঘ)

40 meters

ঙ)

None of these

Explanation

Hint: When two long objects cross each other, ⇒ The distance travelled by them = sum of the lengths of both objects Let length of the each train is ‘l’ metres. ⇒ Relative speed of the faster train with respect to slower train = (46-36)= 10 km/h =(10×5/18) m/s ⇒ Total distance travelled by them = ‘l + l’ = ‘2l’ meters, Now, ⇒ Distance=speed × time, Or, 2l = 10 × (5/18) × 36 = 100, Or, l = 50 meters.

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-

Two trains of equal length are running on parallel lines in same direction at the rate of 46 km/h and 36 km/h. The faster train passes the slower train in 36 seconds. The length of the each train is:Reading

Two trains of equal length are running on parallel lines in same direction at the rate of 46 km/h and 36 km/h. The faster train passes the slower train in 36 seconds. The length of the each train is:

Explanation

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Two trains of equal length are running on parallel lines in same direction at the rate of 46 km/h and 36 km/h. The faster train passes the slower train in 36 seconds. The length of the each train is:
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