Yoko had the same number of red, blue and brown stamps at first. After giving some red and blue stamps and 71 brown stamps away, Yoko had 187 stamps left. There were 3 times as many red stamps as blue stamps left. The number of brown stamps left was 44 fewer than the number of red stamps left. How many brown stamps did she have at first?
| |
Blue |
Red |
Brown |
Total |
| Before |
3 u + 27 |
3 u + 27 |
3 u + 27 |
|
| Change |
- 2 u - 27 |
- 27 |
- 71 |
|
| After |
1 u |
3 u |
3 u - 44 |
187 |
Yoko had the same number of red, blue and brown stamps at first.
Total number of stamps in the end
= 1 u + 3 u + 3 u - 44
= 7 u - 44
7 u - 44 = 187
7 u = 187 + 44
7 u = 231
1 u = 231 ÷ 7 = 33
Number of brown stamps that Yoko had at first
= 3 u - 44 + 71
= 3 u + 27
= 3 x 33 + 27
= 126
Answer(s): 126
