Vaidev and Oscar had a total of $210. Vaidev gave $23 to Oscar. In return, Oscar gave
17 of his money to Vaidev. In the end, Vaidev had four times as much money as Oscar. How much money did Vaidev have at first?
| |
Vaidev |
Oscar |
Total |
| Before |
|
|
$210 |
| Change 1 |
- $23 |
+ $23 |
|
| After 1 |
|
7 p |
|
| Change 2 |
+ 1 p |
- 1 p |
|
| After 2 |
|
6 p |
|
Comparing Vaidev
and Oscar
in the end |
4 u |
1 u |
$210 |
The total amount that Oscar and Vaidev had remains unchanged.
Total amount in the end
= 4 u + 1 u
= 5 u
5 u = 210
1 u = 210 ÷ 5 = 42
Amount that Vaidev has in the end
= 4 u
= 4 x 42
= $168
Amount that Oscar has in the end
= 1 u
= $42
6 p = 1 u = 42
1 p = 42 ÷ 6 = 7
Amount that Oscar gave to Vaidev
= 1 p
= 1 x 7
= $7
Amount that Vaidev had at first
= 168 - 7 + 23
= $184
Answer(s): $184
