Erika had $500 less than Nora. Nora gave
35 of her money to Erika. Erika then gave 25% of her money to Nora. In the end, Nora had $166 less than Erika. How much did Erika have at first?
| |
Nora |
Erika |
| Comparing Nora and Erika at first |
500 more |
|
| Before |
5 u |
+ 500 |
5 u |
|
| Change 1 |
- 3 u |
- 300 |
+ 3 u |
+ 300 |
| After 1 |
2 u |
+ 200 |
8 u |
+ 300 |
| Change 2 |
+ 2 u |
+ 75 |
- 2 u |
- 75 |
| After 2 |
4 u |
+ 275 |
6 u |
+ 225 |
35 x 500= 300
500 - 300 = 200
25% x 8 u
=
25100 x 8 u
= 2 u
25% x 300
=
25100 x 300
= 75
300 - 75 = 225
200 + 75 = 275
If Nora received another $166 in the end, Nora and Erika would have the same amount of money.
6 u + 225 = 4 u + 275 + 166
6 u - 4 u = 275 + 166 - 225
2 u = 216
1 u = 216 ÷ 2 = 108
Amount that Erika had at first
= 5 u
= 5 x 108
= $540
Answer(s): $540
