Mr Quek had $670 more than Mr Koh at first. After Mr Koh had spent $376, Mr Quek had 3 times as much money as Mr Koh. Find the amount of money Mr Koh had at first.
| |
Mr Koh |
Mr Quek
|
| Comparing Mr Koh and Mr Quek at first |
|
$670 more |
| Before |
1 u + $376 |
3 u |
| Change |
- $376 |
|
| After |
1 u |
3 u |
After
Amount that Mr Koh has = 1 u
Amount that Mr Quek has = 3 x 1 u = 3 u
Before
Amount that Mr Koh has = 1 u + 376
Amount that Mr Quek has = 3 u
Mr Quek had $670 more than Mr Koh at first.
If another $670 is given to Mr Koh at first, both will have the same amount at first.
3 u = 1 u + 376 + 670
3 u = 1 u + 1046
3 u - 1 u = 1046
2 u = 1046
1 u = 1046 ÷ 2 = 523
Amount that Mr Koh had at first
= 1 u + 376
= 523 + 376
= $899
Answer(s): $899
