Vincent has 155 balls and Albert has 348 balls. How many balls must Albert give to Vincent so that Vincent will have 149 less balls than Albert?
|
Vincent |
Albert |
Total |
Before |
155 |
348 |
503 |
Change |
+ ? |
- ? |
|
After |
1 u |
1 u + 149 |
503 |
The total number of balls remains unchanged after Albert gives to Vincent.
Total number of balls
= 155 + 348
= 503
Total number of balls in the end
= 1 u + 1 u + 149
= 2 u + 149
2 u + 149 = 503
2 u = 503 - 149
2 u = 354
1 u = 354 ÷ 2 = 177
Number of balls that Albert must give to Vincent
= 177 - 155
= 22
Answer(s): 22