Question
A train with 12 compartments of equal length takes 30
seconds to cross a pole and 40 seconds to cross a 240-metre-long platform. If 6 compartments of the train are removed, then how long would it take to cross a pole?Solution
Let the original length of the train = ‘d’ metres
Then, distance covered by the train in 30 seconds = ‘d’ metres
Distance covered by the train in 40 seconds = (d + 240) metres
So, distance covered in (40 – 30) = 10 seconds = (d + 240 – d) = 240 metres
So, speed of the train = 240 ÷ 10 = 24 m/s
So, original length of the train = 24 × 30 = 720 metres
After removing 6 compartments, length of the train = 720 × (6/12) = 360 metres
So, required time taken = 360 ÷ 24 = 15 seconds
Statements:
Some diamonds are golds.
Some golds are marbles.
Conclusions:
I. Some diamonds are marbles.
II. Som...
Statements:
Some bottles are not cans.
All boxes are drawers.
No can is a box.
Conclusions:
I. Some boxes are no...
Statements:
Some bags are trolleys.
All trolleys are luggage.
Some luggage is a warehouse. ...
Statements: some record are folder.
No folder is a data.
...
Conclusions:
I. Some Apples are being Bananas is a possibility
II. At least Some Papayas are being Bananas is a p...
Statement:
Some P are Q
Only a few R are S.
Only a few S are T.
Only S are P.
Conclusion...
Statements : Some eggs are chickens.
No chicken is a hen.
No hen is a pigeon.
Conclusions : I. Some eggs may be hens.
II....
Conclusions:
I. Some Flats are Buildings.
II. Some Apartments are Flats.
III. No Building is a Roof.
Statements:
Statements: No laptop is a notebook.
All notebooks are monitors.
No monitor is a mouse.
Conclusions: I. No mouse is a monitor.
In the question below some statements are given followed by three conclusions I, II, and III. You have to take the given statements to be true even if...
Relevant for Exams:
