During a charity drive, Primary 6 raised 4 times as much money as Primary 3 on the first week. On the second week, Primary 6 raised another $354 while Primary 3 raised another $573. 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 |
4 u |
1 u |
2 u |
Change |
+ 354 |
+ 573 |
+ 1146 |
After |
2 p |
1 p |
2 p |
(1) = (3)
4 u + 354 = 2 u + 1146
4 u - 2 u = 1146 - 354
2 u = 792
1 u = 792 ÷ 2 = 396
From (2)
1 p = 396 + 573 = 969
Total amount raised by Primary 6
= 2 p
= 2 x 969
= $1938
Answer: $1938