During a charity drive, Primary 6 raised 6 times as much money as Primary 2 on the first week. On the second week, Primary 6 raised another $316 while Primary 2 raised another $536. During the entire charity event, Primary 6 raised 2 times as much as Primary 2. What was the total amount raised by Primary 6?
|
Primary 6 (1) |
Primary 2 (2) |
Make p the same (2) x 2 = (3) |
Before |
6 u |
1 u |
2 u |
Change |
+ 316 |
+ 536 |
+ 1072 |
After |
2 p |
1 p |
2 p |
(1) = (3)
6 u + 316 = 2 u + 1072
6 u - 2 u = 1072 - 316
4 u = 756
1 u = 756 ÷ 4 = 189
From (2)
1 p = 189 + 536 = 725
Total amount raised by Primary 6
= 2 p
= 2 x 725
= $1450
Answer: $1450