Erika had 17 more macarons than Winnie at first. After Erika ate 3 macarons, she had thrice as many macarons as Winnie in the end. How many macarons did Winnie have?
| |
Winnie |
Erika |
| Before |
1 u |
1 u + 17 |
| Change |
|
- 3 |
| After |
1 u |
1 u + 14 |
Comparing Winnie
and Erika in the end |
1 u |
3 u |
The number of macarons that Winnie had remains unchanged.
Number of macarons that Erika had in the end
= 3 x 1 u
= 3 u
3 u = 1 u + 14
3 u - 1 u = 14
2 u = 14
1 u = 14 ÷ 2 = 7
Number of macarons that Winnie had
= 1 u
= 7
Answer(s): 7
