Neave had a total of 193 white and black balloons. After giving away
1011 of the white balloons and 61 black balloons, there was an equal number of white and black balloons left. How many white balloons did he have at first?
|
White balloons |
Black balloons |
Total |
Before |
11 u |
1 u + 61 |
193 |
Change |
- 10 u |
- 61 |
|
After |
1 u |
1 u |
|
Total number of balloons at first
= 11 u + 1 u + 61
= 12 u + 61
12 u + 61 = 193
12 u = 193 - 61
12 u = 132
1 u = 132 ÷ 12 = 11
Number of white balloons that Neave had at first
= 11 u
= 11 x 11
= 121
Answer(s): 121