Tiffany had 4 times as many marbles as Lucy at first. After Tiffany gave 24 marbles to Lucy, they each had the same number of marbles in the end. How many marbles did Tiffany have at first?
| |
Tiffany |
Lucy |
| Before |
4 u |
1 u |
| Change |
- 24 |
+ 24 |
| After |
4 u - 24 |
1 u + 24 |
Comparing Tiffany and
Lucy in the end |
1 |
1 |
The number of marbles that Tiffany and Lucy had in the end is equal.
4 u - 24 = 1 u + 24
4 u - 1 u = 24 + 24
3 u = 48
1 u = 16
Number of marbles that Tiffany had at first
= 4 u
= 4 x 16
= 64
Answer(s): 64
