Charlie and Valen had a total of 90 beads. Valen had half as many beads as Charlie. How many beads must Charlie give to Valen so they have an equal number of beads?
| |
Charlie |
Valen |
Total |
| Before |
2 u |
1 u |
90 |
| Change |
- ? |
+ ? |
|
| After |
1 |
1 |
|
Total number of beads at first = 3 u
1 u = 90 ÷ 3 = 30
Charlie and Valen have an equal number of beads in the end.
Number of beads that Valen has in the end
= 90 ÷ 2
= 45
Number of beads that Charlie must give to Valen
= 45 - 30
= 15
Answer(s): 15
