PSLEAt first, Leah had a total of 73 blue and white balloons. 17 white balloons burst. She then increased the number of blue balloons by 75%. After that, Leah had a total of 74 balloons. How many white balloons did she have at first?
|
Blue |
White |
Total |
Before |
4 u |
|
73 |
Change |
+ 3 u |
- 17 |
+ 1 |
After |
7 u |
|
74 |
75100 =
34Increase in the number of balloons
= 74 - 73
= 1
3 u = 1 + 17
3 u = 18
1 u = 18 ÷ 3 = 6
Number of blue balloons at first
= 4 u
= 4 x 6
= 24
Number of white balloons at first
= 73 - 24
= 49
Answer(s): 49