PSLEAt first, Leah had a total of 42 purple and silver balloons. 13 silver balloons burst. She then increased the number of purple balloons by 75%. After that, Leah had a total of 35 balloons. How many silver balloons did she have at first?
|
Purple |
Silver |
Total |
Before |
4 u |
|
42 |
Change |
+ 3 u |
- 13 |
- 7 |
After |
7 u |
|
35 |
75100 =
34Decrease in the number of balloons
= 42 - 35
= 7
3 u = 13 - 7
3 u = 6
1 u = 6 ÷ 3 = 2
Number of purple balloons at first
= 4 u
= 4 x 2
= 8
Number of silver balloons at first
= 42 - 8
= 34
Answer(s): 34