Carl has 370 mochi balls and Tim has 514 mochi balls. How many mochi balls must Tim give to Carl so that Carl will have 42 more mochi balls than Tim?
| |
Carl |
Tim |
Total |
| Before |
370 |
514 |
884 |
| Change |
+ ? |
- ? |
|
| After |
1 u + 42 |
1 u |
884 |
The total number of mochi balls remains unchanged after Tim gives to Carl.
Total number of mochi balls
= 370 + 514
= 884
Total number of mochi balls in the end
= 1 u + 1 u + 42
= 2 u + 42
2 u + 42 = 884
2 u = 884 - 42
2 u = 842
1 u = 842 ÷ 2 = 421
Number of mochi balls that Tim must give to Carl
= 514 - 421
= 93
Answer(s): 93
