Mr Teo had $700 more than Mr Ng at first. After Mr Ng had spent $308, Mr Teo had 5 times as much money as Mr Ng. Find the amount of money Mr Ng had at first.
| |
Mr Ng |
Mr Teo
|
| Comparing Mr Ng and Mr Teo at first |
|
$700 more |
| Before |
1 u + $308 |
5 u |
| Change |
- $308 |
|
| After |
1 u |
5 u |
After
Amount that Mr Ng has = 1 u
Amount that Mr Teo has = 5 x 1 u = 5 u
Before
Amount that Mr Ng has = 1 u + 308
Amount that Mr Teo has = 5 u
Mr Teo had $700 more than Mr Ng at first.
If another $700 is given to Mr Ng at first, both will have the same amount at first.
5 u = 1 u + 308 + 700
5 u = 1 u + 1008
5 u - 1 u = 1008
4 u = 1008
1 u = 1008 ÷ 4 = 252
Amount that Mr Ng had at first
= 1 u + 308
= 252 + 308
= $560
Answer(s): $560
