Fred had a total of 141 white and blue balloons. After giving away
78 of the white balloons and 60 blue balloons, there was an equal number of white and blue balloons left. How many white balloons did he have at first?
|
White balloons |
Blue balloons |
Total |
Before |
8 u |
1 u + 60 |
141 |
Change |
- 7 u |
- 60 |
|
After |
1 u |
1 u |
|
Total number of balloons at first
= 8 u + 1 u + 60
= 9 u + 60
9 u + 60 = 141
9 u = 141 - 60
9 u = 81
1 u = 81 ÷ 9 = 9
Number of white balloons that Fred had at first
= 8 u
= 8 x 9
= 72
Answer(s): 72