Julie had 4 times as many marbles as Diana at first. After Julie gave 12 marbles to Diana, they each had the same number of marbles in the end. How many marbles did Julie have at first?
| |
Julie |
Diana |
| Before |
4 u |
1 u |
| Change |
- 12 |
+ 12 |
| After |
4 u - 12 |
1 u + 12 |
Comparing Julie and
Diana in the end |
1 |
1 |
The number of marbles that Julie and Diana had in the end is equal.
4 u - 12 = 1 u + 12
4 u - 1 u = 12 + 12
3 u = 24
1 u = 8
Number of marbles that Julie had at first
= 4 u
= 4 x 8
= 32
Answer(s): 32
