Flynn had a total of 172 gold and yellow balls. After giving away
56 of the gold balls and 67 yellow balls, there was an equal number of gold and yellow balls left. How many gold balls did he have at first?
|
Gold balls |
Yellow balls |
Total |
Before |
6 u |
1 u + 67 |
172 |
Change |
- 5 u |
- 67 |
|
After |
1 u |
1 u |
|
Total number of balls at first
= 6 u + 1 u + 67
= 7 u + 67
7 u + 67 = 172
7 u = 172 - 67
7 u = 105
1 u = 105 ÷ 7 = 15
Number of gold balls that Flynn had at first
= 6 u
= 6 x 15
= 90
Answer(s): 90