PSLEAt first, Leah had a total of 43 pink and red balloons. 10 red balloons burst. She then increased the number of pink balloons by 80%. After that, Leah had a total of 41 balloons. How many red balloons did she have at first?
|
Pink |
Red |
Total |
Before |
5 u |
|
43 |
Change |
+ 4 u |
- 10 |
- 2 |
After |
9 u |
|
41 |
80100 =
45Decrease in the number of balloons
= 43 - 41
= 2
4 u = 10 - 2
4 u = 8
1 u = 8 ÷ 4 = 2
Number of pink balloons at first
= 5 u
= 5 x 2
= 10
Number of red balloons at first
= 43 - 10
= 33
Answer(s): 33