Abi had $180 more than Fiona. Abi gave
35 of her money to Fiona. Fiona then gave 25% of her money to Abi. In the end, Fiona had $288 more than Abi. How much did Abi have at first?
| |
Abi |
Fiona |
Comparing Abi
and Fiona at first |
180 more |
|
| Before |
5 u |
+ 180 |
5 u |
|
| Change 1 |
- 3 u |
- 108 |
+ 3 u |
+ 108 |
| After 1 |
2 u |
+ 72 |
8 u |
+ 108 |
| Change 2 |
+ 2 u |
+ 27 |
- 2 u |
- 27 |
| After 2 |
4 u |
+ 99 |
6 u |
+ 81 |
35 x 180= 108
180 - 108 = 72
25% x 8 u
=
25100 x 8 u
= 2 u
25% x 108
=
25100 x 108
= 27
108 - 27 = 81
72 + 27 = 99
If Abi received another $288 in the end, Abi and Fiona would have the same amount of money.
6 u + 81 = 4 u + 99 + 288
6 u - 4 u = 99 + 288 - 81
2 u = 306
1 u = 306 ÷ 2 = 153
Amount that Abi had at first
= 5 u + 180
= 5 x 153 + 180
= 765 + 180
= $945
Answer(s): $945
