Last week, Liam had a total of 207 white and yellow staplers. Two weeks later, he sold
45 of all the white staplers and 9 yellow staplers. Now he has the same number of white and yellow staplers. How many staplers does he have in the end?
| |
White |
Yellow |
Total |
| Before |
5 u |
1 u + 9 |
6 u + 9 |
| Change |
- 4 u |
- 9 |
|
| After |
1 u |
1 u |
|
Comparing the white
and yellow staplers in the end |
1 |
1 |
|
Total number of staplers at first
= 5 u + 1 u + 9
= 6 u + 9
6 u + 9 = 207
6 u = 207 - 9
6 u = 198
1 u = 198 ÷ 6 = 33
Number of staplers that he has in the end
= 1 u + 1 u
= 2 u
= 2 x 33
= 66
Answer(s): 66
