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 $328 while Primary 3 raised another $520. During the entire charity event, Primary 6 raised 2 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 2 = (3) |
Before |
6 u |
1 u |
2 u |
Change |
+ 328 |
+ 520 |
+ 1040 |
After |
2 p |
1 p |
2 p |
(1) = (3)
6 u + 328 = 2 u + 1040
6 u - 2 u = 1040 - 328
4 u = 712
1 u = 712 ÷ 4 = 178
From (2)
1 p = 178 + 520 = 698
Total amount raised by Primary 6
= 2 p
= 2 x 698
= $1396
Answer: $1396