PSLEAt first, Leah had a total of 111 yellow and gold balloons. 18 gold balloons burst. She then increased the number of yellow balloons by 90%. After that, Leah had a total of 165 balloons. How many gold balloons did she have at first?
|
Yellow |
Gold |
Total |
Before |
10 u |
|
111 |
Change |
+ 9 u |
- 18 |
+ 54 |
After |
19 u |
|
165 |
90100 =
910Increase in the number of balloons
= 165 - 111
= 54
9 u = 54 + 18
9 u = 72
1 u = 72 ÷ 9 = 8
Number of yellow balloons at first
= 10 u
= 10 x 8
= 80
Number of gold balloons at first
= 111 - 80
= 31
Answer(s): 31