Sabrina bought some stickers. She gave
13 of the stickers to her cousin and sold
35 of the remaining stickers. After that, she bought another 132 stickers and had the same number of stickers that she bought at first. How many stickers did Sabrina buy at first?
Her cousin |
Remaining stickers |
Bought stickers |
Total |
1x5 = 5 u |
2x5 = 10 u |
|
3x5 = 15 u |
|
Sold |
Left |
|
|
|
3x2 |
2x2 |
|
|
5 u |
6 u |
4 u |
132 |
|
The remaining number of stickers before Sabrina bought another 132 stickers is repeated. Make the remaining number of stickers the same. LCM of 2 and 5 is 10.
Total number of stickers at first = 15 u
Number of stickers that Sabrina had left and bought after that = 4 u + 132
15 u = 4 u + 132
15 u - 4 u = 132
11 u = 132
1 u = 132 ÷ 11 = 12
Total number of stickers at first
= 15 u
= 15 x 12
= 180
Answer(s): 180