Kathy and Hilda had the same amount of money at first. After Kathy gave $420 to her nephew, Hilda had 7 times as much money as Kathy. How much did Kathy have in the end?
|
Kathy |
Hilda |
Before |
1x7 = 7 u |
1x7 = 7 u |
Change |
- $420 |
|
After |
1 u |
7 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 7 is 7.
Amount that Kathy gave to her nephew
= 7 u - 1 u
= 6 u
6 u = 420
1 u = 420 ÷ 6 = 70
Amount that Kathy had in the end
= 1 u
= $420
Answer(s): $420