James splits 4 packs of stickers that have 30 stickers each.  Each sticker cost $.10.  If his friend pays for half how much did James pay?
He buys 4*30=<<4*30=120>>120 stickers
That means it cost 120*.1=$<<120*.1=12>>12
So he pays 12*.5=$<<12*.5=6>>6
#### 6