Risa, Esther and Nora had jelly beans in the ratio of 8 : 6 : 1. After Risa gave 15 jelly beans to Esther and Nora, the three of them had the same number of jelly beans. Find the total number of jelly beans the children had.
| |
Risa |
Esther |
Nora |
Total |
| Before |
8 u |
6 u |
1 u |
15 u |
| Change |
- 15 |
+ 15 |
|
| After |
5 u |
5 u |
5 u |
15 u |
Total number of jelly beans
= 8 u + 6 u + 1 u
= 15 u
Number of jelly beans that each had in the end
= 15 u ÷ 3
= 5 u
Number of jelly beans that Risa gave to Esther and Nora
= 8 u - 5 u
= 3 u
3 u = 15
1 u = 15 ÷ 3 = 5
Total number of jelly beans
= 15 u
= 15 x 5
= 75
Answer(s): 75
