PSLEAt first, Leah had a total of 45 yellow and blue balloons. 19 blue balloons burst. She then increased the number of yellow balloons by 75%. After that, Leah had a total of 32 balloons. How many blue balloons did she have at first?
|
Yellow |
Blue |
Total |
Before |
4 u |
|
45 |
Change |
+ 3 u |
- 19 |
- 13 |
After |
7 u |
|
32 |
75100 =
34Decrease in the number of balloons
= 45 - 32
= 13
3 u = 19 - 13
3 u = 6
1 u = 6 ÷ 3 = 2
Number of yellow balloons at first
= 4 u
= 4 x 2
= 8
Number of blue balloons at first
= 45 - 8
= 37
Answer(s): 37