Question
Two trains ‘T5’ and ‘U5’ of lengths 800 metres
and 400 metres respectively are travelling towards each other. Ratio of speed of ‘T5’ to ‘U5’ is 5:3. If the trains take 60 seconds to cross each other from the time they meet, then find the average of speeds (in km/h) of trains ‘T5’ and ‘U5’.Solution
Let the speeds be 5y and 3y m/s respectively.
Relative speed = 5y + 3y = 8y m/s
ATQ,
8y × 60 = 800 + 400
⇒ 480y = 1200
⇒ y = 2.5
Therefore, required average = (5y + 3y) ÷ 2 = 4y
= 4 × 2.5 = 10 m/s = 10 × (18/5) = 36 km/h
In the questions given below, a part of the sentence is given in bold. Below each sentence, some phrases are given which can substitute the bold part ...
Improve the bold part of the sentence.
He is senior than me in age.
"The committee decided to postpone the meeting, despite the fact that it was already scheduled for next week."
With its stunning coastline, dramatic deserts, and rugged mountains, California offering wide-open spaces for everything from scenic road trips to adren...
Direction: In the sentence given below, a part is highlighted and suggestions for its correction are given below the sentence. Choose the correct opti...
Identify the best way to improve the underlined part of the given sentence. If there is no improvement required, select 'no improvement'.
My g...
- In the question given below, there is a sentence in which one part is given in bold. The part given in bold may or may not be grammatically correct. Choose...
I. The civic body, which had to fill potholes on nearly 14,000 km of road by September 30, has been granted a reprieve.
II. The loads from the ho...
Many a time , partial understanding of esoteric matters is a natural hurdle to all.
The Indian government has been announced a new policy aimed at boosting domestic manufacturing of drones and counter-drone technology.
Relevant for Exams:
