Mr Chia had $983 more than Mr Song at first. After Mr Song had spent $355, Mr Chia had 3 times as much money as Mr Song. Find the amount of money Mr Song had at first.
| |
Mr Song |
Mr Chia
|
| Comparing Mr Song and Mr Chia at first |
|
$983 more |
| Before |
1 u + $355 |
3 u |
| Change |
- $355 |
|
| After |
1 u |
3 u |
After
Amount that Mr Song has = 1 u
Amount that Mr Chia has = 3 x 1 u = 3 u
Before
Amount that Mr Song has = 1 u + 355
Amount that Mr Chia has = 3 u
Mr Chia had $983 more than Mr Song at first.
If another $983 is given to Mr Song at first, both will have the same amount at first.
3 u = 1 u + 355 + 983
3 u = 1 u + 1338
3 u - 1 u = 1338
2 u = 1338
1 u = 1338 ÷ 2 = 669
Amount that Mr Song had at first
= 1 u + 355
= 669 + 355
= $1024
Answer(s): $1024
