Peter had
58 as many erasers as Julie. After Peter bought another 28 erasers, he had 17 less erasers than Julie. How many erasers did Peter have at first?
| |
Peter |
Julie |
| Before |
5 u |
8 u |
| Change |
+ 28 |
|
| After |
5 u + 28 |
8 u |
Julie had 17 more erasers than Peter in the end. So, if Peter had another 17 erasers, he would have the same number of erasers as Julie.
8 u = 5 u + 28 + 17
8 u - 5 u = 28 + 17
3 u = 45
1 u = 45 ÷ 3 = 15
Number of erasers that Peter had at first
= 5 u
= 5 x 15
= 75
Answer: 75
