During a charity drive, Primary 4 raised 6 times as much money as Primary 2 on the first week. On the second week, Primary 4 raised another $201 while Primary 2 raised another $509. During the entire charity event, Primary 4 raised 3 times as much as Primary 2. What was the total amount raised by Primary 4?
|
Primary 4 (1) |
Primary 2 (2) |
Make p the same (2) x 3 = (3) |
Before |
6 u |
1 u |
3 u |
Change |
+ 201 |
+ 509 |
+ 1527 |
After |
3 p |
1 p |
3 p |
(1) = (3)
6 u + 201 = 3 u + 1527
6 u - 3 u = 1527 - 201
3 u = 1326
1 u = 1326 ÷ 3 = 442
From (2)
1 p = 442 + 509 = 951
Total amount raised by Primary 4
= 3 p
= 3 x 951
= $2853
Answer: $2853