Dylan and Harry had a total of 66 erasers. Harry had half as many erasers as Dylan. How many erasers must Dylan give to Harry so they have an equal number of erasers?
|
Dylan |
Harry |
Total |
Before |
2 u |
1 u |
66 |
Change |
- ? |
+ ? |
|
After |
1 |
1 |
|
Total number of erasers at first = 3 u
1 u = 66 ÷ 3 = 22
Dylan and Harry have an equal number of erasers in the end.
Number of erasers that Harry has in the end
= 66 ÷ 2
= 33
Number of erasers that Dylan must give to Harry
= 33 - 22
= 11
Answer(s): 11