PSLEAt first, Leah had a total of 55 grey and green balloons. 12 green balloons burst. She then increased the number of grey balloons by 75%. After that, Leah had a total of 52 balloons. How many green balloons did she have at first?
|
Grey |
Green |
Total |
Before |
4 u |
|
55 |
Change |
+ 3 u |
- 12 |
- 3 |
After |
7 u |
|
52 |
75100 =
34Decrease in the number of balloons
= 55 - 52
= 3
3 u = 12 - 3
3 u = 9
1 u = 9 ÷ 3 = 3
Number of grey balloons at first
= 4 u
= 4 x 3
= 12
Number of green balloons at first
= 55 - 12
= 43
Answer(s): 43