PSLEAt first, Leah had a total of 62 pink and red balloons. 15 red balloons burst. She then increased the number of pink balloons by 75%. After that, Leah had a total of 56 balloons. How many red balloons did she have at first?
|
Pink |
Red |
Total |
Before |
4 u |
|
62 |
Change |
+ 3 u |
- 15 |
- 6 |
After |
7 u |
|
56 |
75100 =
34Decrease in the number of balloons
= 62 - 56
= 6
3 u = 15 - 6
3 u = 9
1 u = 9 ÷ 3 = 3
Number of pink balloons at first
= 4 u
= 4 x 3
= 12
Number of red balloons at first
= 62 - 12
= 50
Answer(s): 50