PSLEAt first, Leah had a total of 62 white and blue balloons. 20 blue balloons burst. She then increased the number of white balloons by 75%. After that, Leah had a total of 51 balloons. How many blue balloons did she have at first?
|
White |
Blue |
Total |
Before |
4 u |
|
62 |
Change |
+ 3 u |
- 20 |
- 11 |
After |
7 u |
|
51 |
75100 =
34Decrease in the number of balloons
= 62 - 51
= 11
3 u = 20 - 11
3 u = 9
1 u = 9 ÷ 3 = 3
Number of white balloons at first
= 4 u
= 4 x 3
= 12
Number of blue balloons at first
= 62 - 12
= 50
Answer(s): 50