Hilda had $145 less than Yoko. Yoko spent
37 of her money and Hilda spent
34 of her money. In the end, Yoko had 3 times as much as Hilda. Find the amount of money Yoko had at first.
| |
Yoko |
Hilda |
Comparing Yoko
and Hilda at first |
$145 more |
|
| Before |
7x3 =
21 u |
4x4 =
16 u |
| Change |
- 3x3 =
- 9 u |
- 3x4 =
- 12 u |
| After |
4x3 =
12 u |
1x4 =
4 u |
Comparing Yoko
and Hilda in the end |
3x4 =
12 u |
1x4 =
4 u |
The amount that Yoko had in the end is repeated. Make the amount that Yoko had in the end the same. LCM of 3 and 4 is 12.
Amount that Hilda had less than Yoko
= 21 u - 16 u
= 5 u
5 u = 145
1 u = 145 ÷ 5 = 29
Amount that Yoko had at first
= 21 u
= 21 x 29
= $609
Answer(s): $609
