ikechemez:
The answer is 0. 4+5+0+0 is 9

wrong answer bro.

Ksslib:

OK first off, One friend has Yellow and Blue.
And another has Green and Blue..

That leaves us with 4 boats reamining which are-----Yellow,Red,Red, and Blue since they're all 8 in total..

Now, given the fact that no guy has same boat, the only possible combination from the boats reaming must be..
Yellow and Red
Red and Blue..

Therefore we have a total combination of;
Yellow and Blue
Green and Blue
Yellow and Red
Green and Red ....... But we don't know who owns which, so let's figure that out...

Alan doesnt have Yellow so he either owns ......
Green and Blue Or Green and Red.... From
Yellow and Blue
Green and Blue
Yellow and Red
Green and Red

Brain doesnt have Red but has Green, so we know he has a ....Green and Blue boat for sure since The only Green combo we have is... Green/Red and Green/blue but remember he has no Red, so its def Green and Blue.

Charles has Yellow so he either owns .....
Yellow and Red Or Yellow and Blue.. From
Yellow and Blue
Green and Blue
Yellow and Red
Green and Red

Darren doesnt have Green but has blue so he owns a Yellow and Blue boat since the only other boat with Blue has green... From..
Yellow and Blue
[s]Green and Blue
Yellow and Red
Green and Red [/s]

Now, Since Alan has no Yellow boat and only 2 boats have no Yellow(Green/Red and Green/Blue), Plus Brain has already taken the Green/Blue one, the only other boat with no yellow combo is Green and Red.. So we now know Alan is the owner of the Green and Red boat..

Charles has a Yellow boat. Only 2 boats have Yellow. Darren already has the Yellow and Blue one, so we now know Charles is the owner of the Yellow and Red one..

Boat owners...
Darren....... Yellow and Blue
Brain..... Green and Blue
Charles..... Yellow and Red
Alan...... Green and Red

Pheeew..

Wow. Absolutely correct and with the clarity of the workings....

Still waiting for someone to answer this;

Very simple brain teaser

During the latest round of the triathlon, Keith was fourth. Adrian
is not the oldest, but is older than Duncan, who was not
second. The child who was next in age to the youngest,
finished second. The child who finished in third place is older
than the child who finished first. Billy is younger than the child
who finished in third place.

Can you determine who finished where and place the children in
order of age?

I'm going to arrange them starting from the oldest
Keith-4th-oldest
Adrian-3rd-next in age
Billy-2nd-next in age
Duncan-1st-youngest

I'm going to arrange them starting from the oldest
Keith-4th-oldest
Adrian-3rd-next in age
Billy-2nd-next in age
Duncan-1st-youngest