PSLEAt first, Leah had a total of 65 pink and grey balloons. 14 grey balloons burst. She then increased the number of pink balloons by 80%. After that, Leah had a total of 63 balloons. How many grey balloons did she have at first?
|
Pink |
Grey |
Total |
Before |
5 u |
|
65 |
Change |
+ 4 u |
- 14 |
- 2 |
After |
9 u |
|
63 |
80100 =
45Decrease in the number of balloons
= 65 - 63
= 2
4 u = 14 - 2
4 u = 12
1 u = 12 ÷ 4 = 3
Number of pink balloons at first
= 5 u
= 5 x 3
= 15
Number of grey balloons at first
= 65 - 15
= 50
Answer(s): 50