Zara and Gwen had an equal number of sweets. After Zara bought another 25 sweets and Gwen bought another 4 sweets, Zara had four times as many sweets as Gwen. Find the number of sweets that each of them had at first.
| |
Zara |
Gwen |
| Before |
4 u - 25 |
1 u - 4 |
| Change |
+ 25 |
+ 4 |
| After |
4 u |
1 u |
The number of sweets that Zara and Gwen had at first is the same.
4 u - 25 = 1 u - 4
4 u - 1 u = 25 - 4
3 u = 21
1 u = 21 ÷ 3 = 7
Number of sweets that each had at first
= 7 - 4
= 3
Answer(s): 3
