Mr Toh had $647 more than Mr Leng at first. After Mr Leng had spent $377, Mr Toh had 3 times as much money as Mr Leng. Find the amount of money Mr Leng had at first.
| |
Mr Leng |
Mr Toh
|
| Comparing Mr Leng and Mr Toh at first |
|
$647 more |
| Before |
1 u + $377 |
3 u |
| Change |
- $377 |
|
| After |
1 u |
3 u |
After
Amount that Mr Leng has = 1 u
Amount that Mr Toh has = 3 x 1 u = 3 u
Before
Amount that Mr Leng has = 1 u + 377
Amount that Mr Toh has = 3 u
Mr Toh had $647 more than Mr Leng at first.
If another $647 is given to Mr Leng at first, both will have the same amount at first.
3 u = 1 u + 377 + 647
3 u = 1 u + 1024
3 u - 1 u = 1024
2 u = 1024
1 u = 1024 ÷ 2 = 512
Amount that Mr Leng had at first
= 1 u + 377
= 512 + 377
= $889
Answer(s): $889
