Natalie had $195 less than Betty. Betty gave
23 of her money to Natalie. Natalie then gave 20% of her money to Betty. In the end, Natalie had $123 more than Betty. How much did Natalie have at first?
| |
Betty |
Natalie |
| Comparing Betty and Natalie at first |
195 more |
|
| Before |
3 u |
+ 195 |
3 u |
|
| Change 1 |
- 2 u |
- 130 |
+ 2 u |
+ 130 |
| After 1 |
1 u |
+ 65 |
5 u |
+ 130 |
| Change 2 |
+ 1 u |
+ 26 |
- 1 u |
- 26 |
| After 2 |
2 u |
+ 91 |
4 u |
+ 104 |
23 x 195= 130
195 - 130 = 65
20% x 5 u
=
20100 x 5 u
= 1 u
20% x 130
=
20100 x 130
= 26
130 - 26 = 104
65 + 26 = 91
If Betty received another $123 in the end, Betty and Natalie would have the same amount of money.
4 u + 104 = 2 u + 91 + 123
4 u - 2 u = 91 + 123 - 104
2 u = 110
1 u = 110 ÷ 2 = 55
Amount that Natalie had at first
= 3 u
= 3 x 55
= $165
Answer(s): $165
