Natalie had 5 times as many coins as Dana at first. After Natalie gave 18 coins to Dana, they each had the same number of coins in the end. How many coins did Natalie have at first?
| |
Natalie |
Dana |
| Before |
5 u |
1 u |
| Change |
- 18 |
+ 18 |
| After |
5 u - 18 |
1 u + 18 |
Comparing Natalie and
Dana in the end |
1 |
1 |
The number of coins that Natalie and Dana had in the end is equal.
5 u - 18 = 1 u + 18
5 u - 1 u = 18 + 18
4 u = 36
1 u = 9
Number of coins that Natalie had at first
= 5 u
= 5 x 9
= 45
Answer(s): 45
