PSLEAt first, Leah had a total of 58 brown and grey balloons. 14 grey balloons burst. She then increased the number of brown balloons by 75%. After that, Leah had a total of 50 balloons. How many grey balloons did she have at first?
|
Brown |
Grey |
Total |
Before |
4 u |
|
58 |
Change |
+ 3 u |
- 14 |
- 8 |
After |
7 u |
|
50 |
75100 =
34Decrease in the number of balloons
= 58 - 50
= 8
3 u = 14 - 8
3 u = 6
1 u = 6 ÷ 3 = 2
Number of brown balloons at first
= 4 u
= 4 x 2
= 8
Number of grey balloons at first
= 58 - 8
= 50
Answer(s): 50