Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6

Q.

Two trains ‘A’ and ‘B’ of length 'l' and '4l' are travelling into a tunnel of length ‘L’ in parallel tracks from opposite directions with velocities 108 km/h and 72km/h, respectively. If train ‘A’ takes 35s less time than train ‘B’ to cross the tunnel then, length ‘L’ of tunnel is (Given L = 60l)

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya

a

2700m

b

1800m

c

1200m

d

900m

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

detailed_solution_thumbnail

TBTA=354l+L20l+L30=35
64206130×l=35  3×642×6160 ×l=35
19212260×l=35 l=6×5=30

L=60×30=1800m

Watch 3-min video & get full concept clarity

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
Two trains ‘A’ and ‘B’ of length 'l' and '4l' are travelling into a tunnel of length ‘L’ in parallel tracks from opposite directions with velocities 108 km/h and 72km/h, respectively. If train ‘A’ takes 35s less time than train ‘B’ to cross the tunnel then, length ‘L’ of tunnel is (Given L = 60l)