On Friday I posted these puzzles…..

– My house is the fourth house away from one end of the street and the ninth house away from the other end of the street.  How many houses are there in the street?

– Points A and B are 100 miles apart.  A car leaves A at the same time as a bike leaves B.  The car travels at 40 mph whilst the bike travels at 10 mph.  Which is further from A when they pass?

If you have not tried to solve them, have a go now.  For everyone else, the answers are after the break.

The answer to the first puzzle is 15, and in the second one the car is 15 miles from A whilst the bike is 30 miles away.  Did you solve them? Any other answers?

UPDATE: OK, so that was an April Fool’s joke.  The correct answers are that there are 12 houses in the street, and that they will be same distance from A.

I have produced an ebook containing 101 of the previous Friday Puzzles! It is called PUZZLED and is available for the Kindle(UK here and USA here) and on the iBookstore (UK here in the USA here). You can try 101 of the puzzles for free here.


    1. For electronic archeologists here is Richard’s original and incorrect answer.

      As he so often provides wrong answers we can not be sure if his errors were due to it being April Fools’ Day (in some cultures) or general incompetence:-

      “The answer to the first puzzle is 15, and in the second one the car is 15 miles from A whilst the bike is 30 miles away. Did you solve them? Any other answers?”

  1. Surely there are 12 houses and they are the same distance from A since they are passing they are st the same point.

  2. Huh? Maybe something to do with the date today, but surely when the car and the bike pass, they are BOTH the same distance from A, because they are at the same place? It makes no difference what speed they are travelling at. I’ve only just woken up, so maybe lining myself up for a fall here… 😉

    1. When the two meet they are the same distance from A but when they pass, which is the instant after they meet, the bicycle is closer to A.
      Great April Fool answer!

  3. I found different answers:
    first : there are 12 houses on the street (9+4 = 13 – 1 ) since my house is the same in both exeamples.
    second : in the moment they pass each other they are at the same distance from point A.
    i tought it was a trick question.

    1. They are the same distance from “A” when they MEET but when they PASS, then the car is slightly furthur from “A”. So answers are 12 and the car, unless there’s more April Fool’s stuff goin on

  4. I concur with Rob; bike and car are equidistant from A when they meet.

    Also, Q1, I don’t understand why there aren’t 12 houses (on my side) of the street. Where do you get 15 from?

  5. The answers are surely 12 (or 24 if we are counting both sides), and they are the same distance from A.
    Oh, and I think Richard is having some fun n April 1st! Too late here in Australia so the joke is on him.

  6. often mr wiseman gets the puzzle wrong (by lose phrasing or typoisms), today he gets the ans wrong, april fool!

    1. As we’ve discussed, there’s rarely a problem with the puzzle, simply with your lack of reading comprehension and inability to follow simple instructions.

  7. Of course those are the ‘April Fools’ answers.

    The correct answers are:
    1. There are most likely* 24 houses on the street and you live at either number 7, 8 ,17 or 18.
    2. Both the car and the bike are the same distance from A ‘when they pass’.

    * I say most likely as you have to assume that there are odd and even sides to this street and that there are the same number of houses on both sides. If you change either of these assumptions you can come to a different answer.

  8. “How many houses are there in the street?”

    Typically houses aren’t *in* the street, so I’m going with zero as the non-April Fool’s answer.

  9. For question 1 I got 8 houses, 2 blocks of flats, 1 office block and one building site – that makes 12 lots in all, so I am not in accord with Richard (no change there).

    1. Who says that there are houses on the opposite side? May be there is a park, or a river or…

  10. I took the end of the street as meaning the road, not the last house, so my answer for 1 was 12. I also agree with others, that the bike and car must be the same distance from A, since they are passing each other.

  11. I guess it’s April fools- The houses depends if they’re counting both sides of street. The my house is number 9 and four so its 9+3=12, but if they only counted one side, then there’s 24 houses. In the second question, they will both be 80 miles from point A after 2 hours. I was only gotten by an April fool once this morning, when I was virtually still asleep.

  12. Your second question involving the car and bike is incorrect, in order to pass, they must be at the same point, so when they pass, they must be right next to each other, therefore, being the same distance from point A, which is 80 miles away, and would take two hours for both to meet. I’m sorry if I misread this, but I saw a trick question. Thank you.

    – Evan Cohrs

  13. I got 12 and for the second one i got the Car.
    Since it said when they pass each other so the Car is further once they pass.

    1. so the car instantaneously jumps 15 miles further the instant they have passed? In my opinion, Richard got it wrong, as so often before, and it has nothing to do with April 1.

      For the record, my answers were 12 (3+8) and “the same”

    2. I agree with “kaggyx” When they ‘meet’ they are the same distance from A but as they ‘pass’ then the car is definitely further, So Richard still got it wrong.

  14. Laugh – I nearly started
    That’s about as funny as Jimmy Saville in a children’s home Richard.

  15. How could the date possibly affect the answers to these puzzles??!!, they didn’t even mention a date in them! Forget these stupid puzzles, UNSUBSCRIBE!

  16. Re the first puzzle, I assumed there were 2 sides to the street, hence 24 (as others have said). I got both puzzles right, and when you’re right you know you’re right, so your April Fool thingy just perplexed me…but good try 🙂

  17. (1) There are 24 houses “on” the street; 12 on each side. There would be no houses “in” the street, unless a horrible earthquake occured but wasn’t mentioned!!!……… (2) “When” they pass the car would be farther away as it is on the B side of the bike, while the bike is now closer to A as it is on the A side of the car. “When” they pass is quite different from “as” they pass. “As” they pass they are equidistant; but “when” they pass the bike is closer.

    1. Yeah you could be right! Although, we are left to speculate on this fact. It is more likely that there is two rows of houses on the street. Yet, these to not require to be in equal number so I understand the reason for not including them. It would satisfy my pedantic twitching if it was mentioned that only one side of the street was to be included… Sigh… I hate sucking all the fun out of things.

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