Xandra had 5 times as many buttons as Gillian at first. After Xandra gave 30 buttons to Gillian, they each had the same number of buttons in the end. How many buttons did Xandra have at first?
| |
Xandra |
Gillian |
| Before |
5 u |
1 u |
| Change |
- 30 |
+ 30 |
| After |
5 u - 30 |
1 u + 30 |
Comparing Xandra and
Gillian in the end |
1 |
1 |
The number of buttons that Xandra and Gillian had in the end is equal.
5 u - 30 = 1 u + 30
5 u - 1 u = 30 + 30
4 u = 60
1 u = 15
Number of buttons that Xandra had at first
= 5 u
= 5 x 15
= 75
Answer(s): 75
