During a charity drive, Primary 6 raised 6 times as much money as Primary 3 on the first week. On the second week, Primary 6 raised another $309 while Primary 3 raised another $587. During the entire charity event, Primary 6 raised 3 times as much as Primary 3. What was the total amount raised by Primary 6?
|
Primary 6 (1) |
Primary 3 (2) |
Make p the same (2) x 3 = (3) |
Before |
6 u |
1 u |
3 u |
Change |
+ 309 |
+ 587 |
+ 1761 |
After |
3 p |
1 p |
3 p |
(1) = (3)
6 u + 309 = 3 u + 1761
6 u - 3 u = 1761 - 309
3 u = 1452
1 u = 1452 ÷ 3 = 484
From (2)
1 p = 484 + 587 = 1071
Total amount raised by Primary 6
= 3 p
= 3 x 1071
= $3213
Answer: $3213