PSLEAt first, Leah had a total of 47 brown and silver balloons. 20 silver balloons burst. She then increased the number of brown balloons by 75%. After that, Leah had a total of 36 balloons. How many silver balloons did she have at first?
|
Brown |
Silver |
Total |
Before |
4 u |
|
47 |
Change |
+ 3 u |
- 20 |
- 11 |
After |
7 u |
|
36 |
75100 =
34Decrease in the number of balloons
= 47 - 36
= 11
3 u = 20 - 11
3 u = 9
1 u = 9 ÷ 3 = 3
Number of brown balloons at first
= 4 u
= 4 x 3
= 12
Number of silver balloons at first
= 47 - 12
= 35
Answer(s): 35