Ken has 345 mochi balls and Ian has 730 mochi balls. How many mochi balls must Ian give to Ken so that Ken will have four times as many mochi balls as Ian?
|
Ken |
Ian |
Total |
Before |
345 |
730 |
1075 |
Change |
+ ? |
- ? |
|
After |
4 u |
1 u |
5 u |
Total number of mochi balls
= 345 + 730
= 1075
Total number of mochi balls
= 4 u + 1 u
= 5 u
5 u = 1075
1 u = 1075 ÷ 5 = 215
Number of mochi balls that Ian must give Ken
= 730 - 215
= 515
Answer(s): 515