Linda and Betty had the
same number of mini cupcakes at first. Linda gave 10 mini cupcakes away to her sister. In the end, Betty had three times as many mini cupcakes as Linda. How many mini cupcakes did Linda have at first?
|
Linda |
Betty |
Before |
3 u |
3 u |
Change |
- 10 |
|
After |
1 u |
3 u |
The number of mini cupcakes that Betty had remains unchanged.
Number of mini cupcakes that Linda gave away
= 3 u - 1 u
= 2 u
2 u = 10
1 u = 10 ÷ 2 = 5
Number of mini cupcakes that Linda had at first
= 3 u
= 3 x 5
= 15
Answer(s): 15