There was an equal number of pink and blue balls in a bag at first. After 12 blue balls were taken out and 32 pink balls were added into the bag, there was
15 as many blue balls as pink balls. Find the number of blue balls in the bag at first.
|
Pink balls |
Blue balls |
Before |
5 u - 32 |
1 u + 12 |
Change |
+ 32 |
- 12 |
After |
5 u |
1 u |
The number of pink and blue balls in the bag is the same at first.
5 u - 32 = 1 u + 12
5 u - 1 u = 12 + 32
4 u = 44
1 u = 44 ÷ 4 = 11
Number of blue balls at first
= 1 u + 12
= 11 + 12
= 23
Answer(s)23