PSLEAt first, Leah had a total of 55 red and silver balloons. 19 silver balloons burst. She then increased the number of red balloons by 80%. After that, Leah had a total of 52 balloons. How many silver balloons did she have at first?
|
Red |
Silver |
Total |
Before |
5 u |
|
55 |
Change |
+ 4 u |
- 19 |
- 3 |
After |
9 u |
|
52 |
80100 =
45Decrease in the number of balloons
= 55 - 52
= 3
4 u = 19 - 3
4 u = 16
1 u = 16 ÷ 4 = 4
Number of red balloons at first
= 5 u
= 5 x 4
= 20
Number of silver balloons at first
= 55 - 20
= 35
Answer(s): 35