SarkariPYQ

SSC Selection Post 2022 PYQ — Question 67

SSC Selection Post - Higher Secondary Level - 09 Feb 2022 - Shift 2 • Quantitative Aptitude • Q67

Back to paper

A railway engine passes two bridges of length 400 m and 235 m in 100 seconds and 60 seconds, respectively. Four times the length of the railway engine (in m) is:

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e. 50. 

Let the length of the engine = x meters

According to the question,

⇒ x+400100=x+23560{{x+400\over100}={x+235\over60}}

⇒ 6(x + 400) = 10(x + 235)

⇒​​​​​​​ 6x + 2400 = 10x + 2350

⇒​​​​​​​ 4x = 50

Four times the length of the railway engine = 50 meters