Vanessa and Xandra have 452 erasers altogether. Xandra has thrice as many erasers as Vanessa. How many erasers must Xandra give to Vanessa so that they have the same number of erasers?
|
Vanessa |
Xandra |
Total |
Before |
1 u |
3 u |
452 |
Change |
+ ? |
- ? |
|
After |
226 |
226 |
452 |
Total number of erasers that Vanessa and Xandra have
= 1 u + 3 u
= 4 u
4 u = 452
1 u = 452 ÷ 4 = 113
Number of erasers that Vanessa and Xandra each has in the end
= 452 ÷ 2
= 226
Number of erasers that Xandra must give to Vanessa
= 226 - 113
= 113
Answer(s): 113