Eva and Risa had the
same number of sweets at first. Eva gave 18 sweets away to her brother. In the end, Risa had three times as many sweets as Eva. How many sweets did Eva have at first?
| |
Eva |
Risa |
| Before |
3 u |
3 u |
| Change |
- 18 |
|
| After |
1 u |
3 u |
The number of sweets that Risa had remains unchanged.
Number of sweets that Eva gave away
= 3 u - 1 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Number of sweets that Eva had at first
= 3 u
= 3 x 9
= 27
Answer(s): 27
