J has 24 cards. He divides them between his brother, his sister, and himself in the ratio 2:1:5. How many cards do they each get?

Answer 1

The total ratio representing the number of cards is 2+1+5=<<2+1+5=8>>8
Since there are 8 parts in a whole, each part represents 24/8=<<24/8=3>>3 cards.
So J's brother gets 3*2=<<3*2=6>>6 cards
J's sister gets 3*1=<<3*1=3>>3 cards
J gets 3*5=<<3*5=15>>15 cards. Answer: \boxed{6,3,15}.