i think is 75 or 100 hope i help
The battle tower is where it has always been--the fight area. But now in platinum the area is called the battle frontier. The original idea for the battle frontier started in Pokemon emerald version.
see all the pokemon and then battle them you retard!
You get HM-surf get the badge so you can use it outside of battle and then go to pallet town and you will be able to get to the ocean there and you ride your Pokemon all the way there... you will have to fight some people.
just fight other pokemon and you'll get XP for that pokemon
in fight area
in the fight area
At the fight area (after you beat the Pokemon league)
You can always swap Pokemon as the Pokemon that is going to evolve will get half the points. If you don't have anymore Pokemon to battle with then you can always lose and then fight in a different battle.
In Driftveil City, you can fight a "heartbreaker" biker. It depends on the version, in Black, he'll teach you about Rotation Battles; in White, he'll teach you about triple battles.
The Battle Tower is still there at the fight area but now it is the battle froniter
When in a battle with Pokemon you will have 4 option fight,bag,Pokemon/go to Pokemon party menu and run press run to get away from the battle
It is northwest of the Pokemon center in the fight area. (you must defeat the elite four to get to the fight area)