Flynn had a total of 170 red and yellow flags. After giving away
23 of the red flags and 70 yellow flags, there was an equal number of red and yellow flags left. How many red flags did he have at first?
|
Red flags |
Yellow flags |
Total |
Before |
3 u |
1 u + 70 |
170 |
Change |
- 2 u |
- 70 |
|
After |
1 u |
1 u |
|
Total number of flags at first
= 3 u + 1 u + 70
= 4 u + 70
4 u + 70 = 170
4 u = 170 - 70
4 u = 100
1 u = 100 ÷ 4 = 25
Number of red flags that Flynn had at first
= 3 u
= 3 x 25
= 75
Answer(s): 75