Answer :
Daniel -- 12 balls
Manuel -- 12 balls × 2 = 24
Kendra -- 24 balls x 2 = 48
12 + 24 + 48 = 84 balls total
Manuel -- 12 balls × 2 = 24
Kendra -- 24 balls x 2 = 48
12 + 24 + 48 = 84 balls total
Well, 12 times 2 is 24, which is how many Manuel has.
Kendra has twice that, so she has 48.
Add 12, 24, and 48 together to get 84.
The answer is C.