PSLEAt first, Leah had a total of 50 purple and brown balloons. 13 brown balloons burst. She then increased the number of purple balloons by 75%. After that, Leah had a total of 46 balloons. How many brown balloons did she have at first?
|
Purple |
Brown |
Total |
Before |
4 u |
|
50 |
Change |
+ 3 u |
- 13 |
- 4 |
After |
7 u |
|
46 |
75100 =
34Decrease in the number of balloons
= 50 - 46
= 4
3 u = 13 - 4
3 u = 9
1 u = 9 ÷ 3 = 3
Number of purple balloons at first
= 4 u
= 4 x 3
= 12
Number of brown balloons at first
= 50 - 12
= 38
Answer(s): 38