Hilda had the same number of grey, pink and red stickers at first. After giving some grey and pink stickers and 52 red stickers away, Hilda had 161 stickers left. There were 4 times as many grey stickers as pink stickers left. The number of red stickers left was 10 fewer than the number of grey stickers left. How many red stickers did she have at first?
| |
Pink |
Grey |
Red |
Total |
| Before |
4 u + 42 |
4 u + 42 |
4 u + 42 |
|
| Change |
- 3 u - 42 |
- 42 |
- 52 |
|
| After |
1 u |
4 u |
4 u - 10 |
161 |
Hilda had the same number of grey, pink and red stickers at first.
Total number of stickers in the end
= 1 u + 4 u + 4 u - 10
= 9 u - 10
9 u - 10 = 161
9 u = 161 + 10
9 u = 171
1 u = 171 ÷ 9 = 19
Number of red stickers that Hilda had at first
= 4 u - 10 + 52
= 4 u + 42
= 4 x 19 + 42
= 118
Answer(s): 118
