Mark had a total of 181 purple and blue balls. After giving away
23 of the purple balls and 53 blue balls, there was an equal number of purple and blue balls left. How many purple balls did he have at first?
| |
Purple balls |
Blue balls |
Total |
| Before |
3 u |
1 u + 53 |
181 |
| Change |
- 2 u |
- 53 |
|
| After |
1 u |
1 u |
|
Total number of balls at first
= 3 u + 1 u + 53
= 4 u + 53
4 u + 53 = 181
4 u = 181 - 53
4 u = 128
1 u = 128 ÷ 4 = 32
Number of purple balls that Mark had at first
= 3 u
= 3 x 32
= 96
Answer(s): 96
