Min had some buttons at first. She gave 26 of her buttons to her cousin and 14 of her buttons to her best friend. After that, her mother gave her another 16 buttons. She had 51 buttons in the end. How many buttons did Min have at first?
Fraction of buttons left after giving to her cousin and her best friend
= 1 -
26 -
14 = 1 -
412 -
312 = 1 -
712 =
512 Number of buttons left after giving to her cousin and her best friend = 5 u
Number of buttons left after her mother gave her another 16 buttons = 5 u + 16
5 u + 16 = 51
5 u = 51 - 16
5 u = 35
1 u = 35 ÷ 5 = 7
Number of buttons that Min had at first
= 12 u
= 12 x 7
= 84
Answer(s): 84
