During a charity drive, Primary 4 raised 6 times as much money as Primary 1 on the first week. On the second week, Primary 4 raised another $207 while Primary 1 raised another $578. During the entire charity event, Primary 4 raised 3 times as much as Primary 1. What was the total amount raised by Primary 4?
|
Primary 4 (1) |
Primary 1 (2) |
Make p the same (2) x 3 = (3) |
Before |
6 u |
1 u |
3 u |
Change |
+ 207 |
+ 578 |
+ 1734 |
After |
3 p |
1 p |
3 p |
(1) = (3)
6 u + 207 = 3 u + 1734
6 u - 3 u = 1734 - 207
3 u = 1527
1 u = 1527 ÷ 3 = 509
From (2)
1 p = 509 + 578 = 1087
Total amount raised by Primary 4
= 3 p
= 3 x 1087
= $3261
Answer: $3261