PSLEAt first, Leah had a total of 49 black and green balloons. 17 green balloons burst. She then increased the number of black balloons by 80%. After that, Leah had a total of 44 balloons. How many green balloons did she have at first?
|
Black |
Green |
Total |
Before |
5 u |
|
49 |
Change |
+ 4 u |
- 17 |
- 5 |
After |
9 u |
|
44 |
80100 =
45Decrease in the number of balloons
= 49 - 44
= 5
4 u = 17 - 5
4 u = 12
1 u = 12 ÷ 4 = 3
Number of black balloons at first
= 5 u
= 5 x 3
= 15
Number of green balloons at first
= 49 - 15
= 34
Answer(s): 34