Sabrina bought some stickers. She gave
17 of the stickers to her brother and sold
34 of the remaining stickers. After that, she bought another 99 stickers and had the same number of stickers that she bought at first. How many stickers did Sabrina buy at first?
| Her brother |
Remaining stickers |
Bought stickers |
Total |
1x2 =
2 u |
6x2 =
12 u |
|
7x2 =
14 u |
| |
Sold |
Left |
|
|
| |
3x3 |
1x3 |
|
|
| 2 u |
9 u |
3 u |
99 |
|
The remaining number of stickers before Sabrina bought another 99 stickers is repeated. Make the remaining number of stickers the same. LCM of 6 and 4 is 12.
Total number of stickers at first = 14 u
Number of stickers that Sabrina had left and bought after that = 3 u + 99
14 u = 3 u + 99
14 u - 3 u = 99
11 u = 99
1 u = 99 ÷ 11 = 9
Total number of stickers at first
= 14 u
= 14 x 9
= 126
Answer(s): 126
