Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
49 views
in Aptitude by (114k points)
closed by
A 220 m long train running at the speed of 110 km/h crosses another train running in the opposite direction at the speed of 70 km/h in 7 seconds. What is the length of the other train?
1. 130 m
2. 150 m
3. 170 m
4. 100 m

1 Answer

0 votes
by (113k points)
selected by
 
Best answer
Correct Answer - Option 1 : 130 m

Given:

Length of 1st train is 220m

Speed of 1st train is 110 km/h

Speed of 2nd train is 70 km/h

Formula Used:

Relative speed of train in opposite direction = S1 + S2

Time = Distance/Speed

Calculation:

Let the length of 2nd train be x

Relative speed of train = 110 + 70 = 180 × 5/18 = 50 m/sec

According to the question;

Time = (220 + x)/50

⇒ 7 = (220 + x)/50

⇒ 350 = 220 + x

⇒ x = 130 m

∴ The length of other train is 130 m

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...