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 $351 while Primary 3 raised another $517. 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 |
+ 351 |
+ 517 |
+ 1551 |
After |
3 p |
1 p |
3 p |
(1) = (3)
5 u + 351 = 3 u + 1551
5 u - 3 u = 1551 - 351
2 u = 1200
1 u = 1200 ÷ 2 = 600
From (2)
1 p = 600 + 517 = 1117
Total amount raised by Primary 6
= 3 p
= 3 x 1117
= $3351
Answer: $3351