During a charity drive, Primary 5 raised 5 times as much money as Primary 2 on the first week. On the second week, Primary 5 raised another $336 while Primary 2 raised another $594. During the entire charity event, Primary 5 raised 3 times as much as Primary 2. What was the total amount raised by Primary 5?
|
Primary 5 (1) |
Primary 2 (2) |
Make p the same (2) x 3 = (3) |
Before |
5 u |
1 u |
3 u |
Change |
+ 336 |
+ 594 |
+ 1782 |
After |
3 p |
1 p |
3 p |
(1) = (3)
5 u + 336 = 3 u + 1782
5 u - 3 u = 1782 - 336
2 u = 1446
1 u = 1446 ÷ 2 = 723
From (2)
1 p = 723 + 594 = 1317
Total amount raised by Primary 5
= 3 p
= 3 x 1317
= $3951
Answer: $3951