Harry has
57 as many erasers as Caden. They have a total of 276 erasers. How many erasers must Caden give to Harry so that they will have the same number of erasers?
|
Harry |
Caden |
Total |
Before |
5 u |
7 u |
12 u |
Change |
+ ? |
- ? |
|
After |
138 |
138 |
276 |
Total number of erasers
= 5 u + 7 u
= 12 u
12 u = 276
1 u = 276 ÷ 12 = 23
Number of erasers that each of them has in the end
= 276 ÷ 2
= 138
Number of erasers that Harry has
= 5 u
= 5 x 23
= 115
Number of erasers that Caden must give Harry
= 138 - 115
= 23
Answer(s): 23