Ahmad had a total of 135 gold and brown balloons. After giving away
13 of the gold balloons and 60 brown balloons, there was an equal number of gold and brown balloons left. How many gold balloons did he have at first?
| |
Gold balloons |
Brown balloons |
Total |
| Before |
3 u |
2 u + 60 |
135 |
| Change |
- 1 u |
- 60 |
|
| After |
2 u |
2 u |
|
Total number of balloons at first
= 3 u + 2 u + 60
= 5 u + 60
5 u + 60 = 135
5 u = 135 - 60
5 u = 75
1 u = 75 ÷ 5 = 15
Number of gold balloons that Ahmad had at first
= 3 u
= 3 x 15
= 45
Answer(s): 45
