Vaidev had $360 more than Riordan at first. Vaidev gave $30 to Riordan. As a result, Riordan has
47 as much money as Vaidev. How much money had each of them at first?
- Vaidev
- Riordan
| |
Vaidev |
Riordan |
More |
| Before |
7 u + $30 |
4 u - $30 |
$360 |
| Change |
- $30 |
+ $30 |
|
| After |
7 u |
4 u |
|
(a)
Vaidev had $360 more than Riordan at first. If Riordan received another $360, Vaidev and Riordan would have the same amount at first.
7 u + 30 = 4 u - 30 + 360
7 u + 30 = 4 u + 330
7 u - 4 u = 330 - 30
3 u = 300
1 u = 300 ÷ 3 = 100
Amount that Vaidev had at first
= 7 u + 30
= 7 x 100 + 30
= 700 + 30
= $730
(b)
Amount that Riordan had at first
= 4 u - 30
= 4 x 100 - 30
= 400 - 30
= $370
Answer(s): (a) $730; (b) $370
