The Two Cars

Algebra Level 2

There are 2 cars A and B .

Car A moves off from London to Birmingham with a speed of 70km/h , and Car B moves from Birmingham to London with a speed of 100km/h .

Which one will be closer to London when they meet?

(Consider the cars as moving points and their path as a straight line.)

This problem is a part of the set brain games .

Car B Car A None of these Depends on distance and time taken Both wiil be at equal distance

8 solutions

Ola Khatib
Feb 24, 2015

When they meet they are at the same location, and so they are both the same distance away from London. Trick question.

When they meet only the front of the cars are in the identical spot. Presumably the back of car A is closer to London. So the answer of both is incorrect.

Zack Cipolla - 6 years, 3 months ago

Please read the question properly first.
The cars are just moving points . They don't have any length.

A Former Brilliant Member - 6 years, 3 months ago

Yup. That's what I did not read :D

Máté Streitmann - 5 years, 4 months ago

OP must have assumed that, in order to "meet", the cars' fronts and backs would be aligned with each other.

Ola Khatib - 6 years, 3 months ago

Yes ur point is true

Prashul Jain - 5 years, 5 months ago

Arnab Sinha
Feb 19, 2015

When they meet at a point they will obviously be at a distance 'x' from London

Since Car A is facing Car B when they meet, the back end of Car A is technically closer to London than the front end of Car B. Therefore, I put Car A as my answer and got it wrong. I don't think my answer should be wrong.

Richard Levine - 6 years, 3 months ago

They are just points.
they don't have any length

A Former Brilliant Member - 6 years, 3 months ago

Good point (sorry, I couldn't resist). I was in a hurry and failed to read that part. However, cars as points is a strange analogy, since cars do have length.

Richard Levine - 6 years, 3 months ago

this is a jock only...because they didn't give time at which they moved.... no need to know distance but time we need that!!!

Roger Djedje - 6 years, 3 months ago

Melissa Quail
Feb 20, 2015

When the two cars meet they will be in the same place so they will therefore be the same distance from London. The other information is all irrelevant for the question asked.

Stacey Greenstein
Mar 8, 2015

"When they meet" = "at the same point". Hence, they are both as far from any given point.

Henrique Ribeiro
Feb 26, 2015

That's a joke. If they are at the same point, the distance is the same.

At the instant when two cars heading toward each other meet, they are each closer to their respective point of departure, since a car has nonzero length.

Geoff Fetzer-gill - 6 years, 3 months ago

Anurag Damane
Aug 24, 2015

Common Sense when they will meet they will be at same place therefore the distance from London to both the cars will be same

Gandharv Jain
Apr 15, 2015

Actually there might be a difference of 5m so the real answer should have been car A

But you see that they are just points , so how can you get a distance of 5m ?

A Former Brilliant Member - 6 years, 1 month ago

Fabio Gama
Feb 27, 2015

If you are nerd enough :-) you will also ask what direction the road goes in that point, since one of the lanes may be closer to London than the other

The Two Cars

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