Esther had $255 more than Sabrina. Esther gave
23 of her money to Sabrina. Sabrina then gave 20% of her money to Esther. In the end, Esther had $231 less than Sabrina. How much did Esther have at first?
| |
Esther |
Sabrina |
| Comparing Esther and Sabrina at first |
255 more |
|
| Before |
3 u |
+ 255 |
3 u |
|
| Change 1 |
- 2 u |
- 170 |
+ 2 u |
+ 170 |
| After 1 |
1 u |
+ 85 |
5 u |
+ 170 |
| Change 2 |
+ 1 u |
+ 34 |
- 1 u |
- 34 |
| After 2 |
2 u |
+ 119 |
4 u |
+ 136 |
23 x 255= 170
255 - 170 = 85
20% x 5 u
=
20100 x 5 u
= 1 u
20% x 170
=
20100 x 170
= 34
170 - 34 = 136
85 + 34 = 119
If Esther received another $231 in the end, Esther and Sabrina would have the same amount of money.
4 u + 136 = 2 u + 119 + 231
4 u - 2 u = 119 + 231 - 136
2 u = 214
1 u = 214 ÷ 2 = 107
Amount that Esther had at first
= 3 u + 255
= 3 x 107 + 255
= 321 + 255
= $576
Answer(s): $576
