PSLEAt first, Leah had a total of 79 red and purple balloons. 16 purple balloons burst. She then increased the number of red balloons by 75%. After that, Leah had a total of 93 balloons. How many purple balloons did she have at first?
|
Red |
Purple |
Total |
Before |
4 u |
|
79 |
Change |
+ 3 u |
- 16 |
+ 14 |
After |
7 u |
|
93 |
75100 =
34Increase in the number of balloons
= 93 - 79
= 14
3 u = 14 + 16
3 u = 30
1 u = 30 ÷ 3 = 10
Number of red balloons at first
= 4 u
= 4 x 10
= 40
Number of purple balloons at first
= 79 - 40
= 39
Answer(s): 39