Owen has 339 balls and Bobby has 490 balls. How many balls must Bobby give to Owen so that Owen will have 119 less balls than Bobby?
| |
Owen |
Bobby |
Total |
| Before |
339 |
490 |
829 |
| Change |
+ ? |
- ? |
|
| After |
1 u |
1 u + 119 |
829 |
The total number of balls remains unchanged after Bobby gives to Owen.
Total number of balls
= 339 + 490
= 829
Total number of balls in the end
= 1 u + 1 u + 119
= 2 u + 119
2 u + 119 = 829
2 u = 829 - 119
2 u = 710
1 u = 710 ÷ 2 = 355
Number of balls that Bobby must give to Owen
= 355 - 339
= 16
Answer(s): 16
