Mr Zhang had $611 more than Mr Seah at first. After Mr Seah had spent $379, Mr Zhang had 4 times as much money as Mr Seah. Find the amount of money Mr Zhang had at first.
| |
Mr Seah |
Mr Zhang |
Comparing Mr Seah
and Mr Zhang at first |
|
$611 more |
| Before |
1 u + $379 |
4 u |
| Change |
- $379 |
|
| After |
1 u |
4 u |
Mr Zhang had $611 more than Mr Seah at first. If another $611 is given to Mr Seah at first, both will have the same amount at first.
4 u = 1 u + 379 + 611
4 u = 1 u + 990
4 u - 1 u = 990
3 u = 990
1 u = 990 ÷ 3 = 330
Amount that Mr Zhang had at first
= 4 u
= 4 x 330
= $1320
Answer(s): $1320
