Peter has
58 as many erasers as Oliver. They have a total of 286 erasers. How many erasers must Oliver give to Peter so that they will have the same number of erasers?
|
Peter |
Oliver |
Total |
Before |
5 u |
8 u |
13 u |
Change |
+ ? |
- ? |
|
After |
143 |
143 |
286 |
Total number of erasers
= 5 u + 8 u
= 13 u
13 u = 286
1 u = 286 ÷ 13 = 22
Number of erasers that each of them has in the end
= 286 ÷ 2
= 143
Number of erasers that Peter has
= 5 u
= 5 x 22
= 110
Number of erasers that Oliver must give Peter
= 143 - 110
= 33
Answer(s): 33