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 $290 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 |
5 u |
1 u |
2 u |
Change |
+ 290 |
+ 520 |
+ 1040 |
After |
2 p |
1 p |
2 p |
(1) = (3)
5 u + 290 = 2 u + 1040
5 u - 2 u = 1040 - 290
3 u = 750
1 u = 750 ÷ 3 = 250
From (2)
1 p = 250 + 520 = 770
Total amount raised by Primary 6
= 2 p
= 2 x 770
= $1540
Answer: $1540