Valen has 223 balls and Simon has 378 balls. How many balls must Simon give to Valen so that Valen will have 107 less balls than Simon?
|
Valen |
Simon |
Total |
Before |
223 |
378 |
601 |
Change |
+ ? |
- ? |
|
After |
1 u |
1 u + 107 |
601 |
The total number of balls remains unchanged after Simon gives to Valen.
Total number of balls
= 223 + 378
= 601
Total number of balls in the end
= 1 u + 1 u + 107
= 2 u + 107
2 u + 107 = 601
2 u = 601 - 107
2 u = 494
1 u = 494 ÷ 2 = 247
Number of balls that Simon must give to Valen
= 247 - 223
= 24
Answer(s): 24