John and Gabby had the same number of sweets. After Gabby gave away 20 sweets and John gave away 40 sweets, Gabby had 2 times as many sweets as John. How many sweets did each of them have at first?
| |
John |
Gabby |
| Before |
1 u + 40 |
2 u + 20 |
| Change |
- 40 |
- 20 |
| After |
1 u |
2 u |
The number of sweets that John and Gabby had at first is the same.
2 u + 20 = 1 u + 40
2 u - 1 u = 40 - 20
1 u = 20
1 u = 20 ÷ 1 = 20
Number of sweets that each of them had at first
= 1 u + 40
= 20 + 40
= 60
Answer(s): 60
