PSLEAt first, Leah had a total of 58 grey and white balloons. 20 white balloons burst. She then increased the number of grey balloons by 75%. After that, Leah had a total of 56 balloons. How many white balloons did she have at first?
|
Grey |
White |
Total |
Before |
4 u |
|
58 |
Change |
+ 3 u |
- 20 |
- 2 |
After |
7 u |
|
56 |
75100 =
34Decrease in the number of balloons
= 58 - 56
= 2
3 u = 20 - 2
3 u = 18
1 u = 18 ÷ 3 = 6
Number of grey balloons at first
= 4 u
= 4 x 6
= 24
Number of white balloons at first
= 58 - 24
= 34
Answer(s): 34