During a charity drive, Primary 6 raised 5 times as much money as Primary 3 on the first week. On the second week, Primary 6 raised another $224 while Primary 3 raised another $478. 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 |
5 u |
1 u |
3 u |
Change |
+ 224 |
+ 478 |
+ 1434 |
After |
3 p |
1 p |
3 p |
(1) = (3)
5 u + 224 = 3 u + 1434
5 u - 3 u = 1434 - 224
2 u = 1210
1 u = 1210 ÷ 2 = 605
From (2)
1 p = 605 + 478 = 1083
Total amount raised by Primary 6
= 3 p
= 3 x 1083
= $3249
Answer: $3249