Ryan and Vaidev had a total of 36 erasers. Vaidev had half as many erasers as Ryan. How many erasers must Ryan give to Vaidev so they have an equal number of erasers?
|
Ryan |
Vaidev |
Total |
Before |
2 u |
1 u |
36 |
Change |
- ? |
+ ? |
|
After |
1 |
1 |
|
Total number of erasers at first = 3 u
1 u = 36 ÷ 3 = 12
Ryan and Vaidev have an equal number of erasers in the end.
Number of erasers that Vaidev has in the end
= 36 ÷ 2
= 18
Number of erasers that Ryan must give to Vaidev
= 18 - 12
= 6
Answer(s): 6