David has 374 chocolate bars and Ryan has 794 chocolate bars. How many chocolate bars must Ryan give to David so that David will have seven times as many chocolate bars as Ryan?
|
David |
Ryan |
Total |
Before |
374 |
794 |
1168 |
Change |
+ ? |
- ? |
|
After |
7 u |
1 u |
8 u |
Total number of chocolate bars
= 374 + 794
= 1168
Total number of chocolate bars
= 7 u + 1 u
= 8 u
8 u = 1168
1 u = 1168 ÷ 8 = 146
Number of chocolate bars that Ryan must give David
= 794 - 146
= 648
Answer(s): 648