Winnie had 5 times as many marbles as Lucy at first. After Winnie gave 30 marbles to Lucy, they each had the same number of marbles in the end. How many marbles did Lucy have in the end?
| |
Winnie |
Lucy |
| Before |
5 u |
1 u |
| Change |
- 30 |
+ 30 |
| After |
5 u - 30 |
1 u + 30 |
Comparing Winnie and
Lucy in the end |
1 |
1 |
The number of marbles that Winnie and Lucy 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 marbles that Lucy had in the end
= 1 u + 30
= 15 + 30
= 45
Answer(s): 45
