maths
posted by Donna on .
Sean had 24 coloured pencils.
This is a mutiple choice question.
He was given a new set of coloured pencils which contained twice as many as he already had.
Sean gave 11 coloured pencils to each of his three sisters. How many pencils did he now have?
a) 36
b) 37
c) 39
d) 61
Please help.

24 + 48 = 72
3 * 11 = 33
72  33 = ?