Tina had $240 less than Irene. Irene gave
35 of her money to Tina. Tina then gave 25% of her money to Irene. In the end, Tina had $250 more than Irene. How much did Tina have at first?
| |
Irene |
Tina |
| Comparing Irene and Tina at first |
240 more |
|
| Before |
5 u |
+ 240 |
5 u |
|
| Change 1 |
- 3 u |
- 144 |
+ 3 u |
+ 144 |
| After 1 |
2 u |
+ 96 |
8 u |
+ 144 |
| Change 2 |
+ 2 u |
+ 36 |
- 2 u |
- 36 |
| After 2 |
4 u |
+ 132 |
6 u |
+ 108 |
35 x 240= 144
240 - 144 = 96
25% x 8 u
=
25100 x 8 u
= 2 u
25% x 144
=
25100 x 144
= 36
144 - 36 = 108
96 + 36 = 132
If Irene received another $250 in the end, Irene and Tina would have the same amount of money.
6 u + 108 = 4 u + 132 + 250
6 u - 4 u = 132 + 250 - 108
2 u = 274
1 u = 274 ÷ 2 = 137
Amount that Tina had at first
= 5 u
= 5 x 137
= $685
Answer(s): $685
