Warren had a total of 199 black and white balloons. After giving away
12 of the black balloons and 61 white balloons, there was an equal number of black and white balloons left. How many black balloons did he have at first?
| |
Black balloons |
White balloons |
Total |
| Before |
2 u |
1 u + 61 |
199 |
| Change |
- 1 u |
- 61 |
|
| After |
1 u |
1 u |
|
Total number of balloons at first
= 2 u + 1 u + 61
= 3 u + 61
3 u + 61 = 199
3 u = 199 - 61
3 u = 138
1 u = 138 ÷ 3 = 46
Number of black balloons that Warren had at first
= 2 u
= 2 x 46
= 92
Answer(s): 92
