Abi and Hilda had the same amount of money at first. After Abi gave $90 to her cousin, Hilda had 4 times as much money as Abi. How much did Abi have in the end?
| |
Abi |
Hilda |
| Before |
1x4 =
4 u |
1x4 =
4 u |
| Change |
- $90 |
|
| After |
1 u |
4 u |
The amount that Hilda had at first and in the end remains unchanged. Make the amount that Hilda had the same. LCM of 1 and 4 is 4.
Amount that Abi gave to her cousin
= 4 u - 1 u
= 3 u
3 u = 90
1 u = 90 ÷ 3 = 30
Amount that Abi had in the end
= 1 u
= $90
Answer(s): $90
