Mark has kangaroos and goats.  Kangaroos have two legs and goats have four legs.  If he has 23 kangaroos and three times as many goats as kangaroos what is the total number of legs of all his animals?
His kangaroos have a total of 23*2=<<23*2=46>>46 legs
He has 23*3=<<23*3=69>>69 goats
The goats have 69*4=<<69*4=276>>276 legs
So in total his animals have 276+46=<<276+46=322>>322 legs
#### 322