Jack had
38 as many erasers as Tiffany. After Jack gave away 60 erasers, he had 80 less erasers than Tiffany. How many erasers did Tiffany have?
| |
Jack |
Tiffany |
| Before |
3 u |
8 u |
| Change |
- 60 |
|
| After |
3 u - 60 |
8 u |
Tiffany had 80 more erasers than Jack in the end. So, if Jack had another 80 erasers, he would have the same number of erasers as Tiffany.
8 u = 3 u - 60 + 80
8 u - 3 u = 80 - 60
5 u = 20
1 u = 20 ÷ 5 = 4
Number of erasers that Tiffany had at first
= 8 u
= 8 x 4
= 32
Answer: 32
