PSLEAt first, Leah had a total of 63 white and yellow balloons. 19 yellow balloons burst. She then increased the number of white balloons by 75%. After that, Leah had a total of 59 balloons. How many yellow balloons did she have at first?
|
White |
Yellow |
Total |
Before |
4 u |
|
63 |
Change |
+ 3 u |
- 19 |
- 4 |
After |
7 u |
|
59 |
75100 =
34Decrease in the number of balloons
= 63 - 59
= 4
3 u = 19 - 4
3 u = 15
1 u = 15 ÷ 3 = 5
Number of white balloons at first
= 4 u
= 4 x 5
= 20
Number of yellow balloons at first
= 63 - 20
= 43
Answer(s): 43