PSLEAt first, Leah had a total of 56 red and pink balloons. 20 pink balloons burst. She then increased the number of red balloons by 80%. After that, Leah had a total of 48 balloons. How many pink balloons did she have at first?
|
Red |
Pink |
Total |
Before |
5 u |
|
56 |
Change |
+ 4 u |
- 20 |
- 8 |
After |
9 u |
|
48 |
80100 =
45Decrease in the number of balloons
= 56 - 48
= 8
4 u = 20 - 8
4 u = 12
1 u = 12 ÷ 4 = 3
Number of red balloons at first
= 5 u
= 5 x 3
= 15
Number of pink balloons at first
= 56 - 15
= 41
Answer(s): 41