Linda and Olivia had the same number of marbles. After Linda had given away 60 marbles, Olivia had 4 times as many marbles as Linda. How many marbles did each of them have at first?
| |
Linda |
Olivia |
| Before |
1 u + 60 |
4 u |
| Change |
- 60 |
|
| After |
1 u |
4 u |
Number of marbles that Olivia had remains unchanged.
Number of marbles that Linda and Olivia had at first is equal.
4 u = 1 u + 60
4 u - 1 u = 60
3 u = 60
1 u = 60 ÷ 3= 20
Number of marbles that each of them had at first
= 1 u + 60
= 20 + 60
= 80
Answer(s): 80
