I have a riddle.Can you solve it?!

I have a riddle.Can you solve it?

I already know the answer. Do you?
There were two friends named Sinbad and Hinbad. They each owned the same number of horses.How many horses should Sinbad give Hinbad so that Hinbad has 6 more that Sinbad?

Well. Do you know?

3.
They each had 9, so if Sinbad gives 3 away, Hinbad has 12, and Sinbad has 6.