Mr Chia had $613 more than Mr Sih at first. After Mr Sih had spent $435, Mr Chia had 5 times as much money as Mr Sih. Find the amount of money Mr Sih had at first.
| |
Mr Sih |
Mr Chia
|
| Comparing Mr Sih and Mr Chia at first |
|
$613 more |
| Before |
1 u + $435 |
5 u |
| Change |
- $435 |
|
| After |
1 u |
5 u |
After
Amount that Mr Sih has = 1 u
Amount that Mr Chia has = 5 x 1 u = 5 u
Before
Amount that Mr Sih has = 1 u + 435
Amount that Mr Chia has = 5 u
Mr Chia had $613 more than Mr Sih at first.
If another $613 is given to Mr Sih at first, both will have the same amount at first.
5 u = 1 u + 435 + 613
5 u = 1 u + 1048
5 u - 1 u = 1048
4 u = 1048
1 u = 1048 ÷ 4 = 262
Amount that Mr Sih had at first
= 1 u + 435
= 262 + 435
= $697
Answer(s): $697
