Shannon had some buttons at first. She gave 18 of her buttons to her sister and 14 of her buttons to her neighbour. After that, her mother gave her another 12 buttons. She had 27 buttons in the end. How many buttons did Shannon have at first?
Fraction of buttons left after giving to her sister and her neighbour
= 1 -
18 -
14 = 1 -
18 -
28 = 1 -
38 =
58 Number of buttons left after giving to her sister and her neighbour = 5 u
Number of buttons left after her mother gave her another 12 buttons = 5 u + 12
5 u + 12 = 27
5 u = 27 - 12
5 u = 15
1 u = 15 ÷ 5 = 3
Number of buttons that Shannon had at first
= 8 u
= 8 x 3
= 24
Answer(s): 24
