During a charity drive, Primary 5 raised 4 times as much money as Primary 1 on the first week. On the second week, Primary 5 raised another $284 while Primary 1 raised another $591. During the entire charity event, Primary 5 raised 2 times as much as Primary 1. What was the total amount raised by Primary 5?
|
Primary 5 (1) |
Primary 1 (2) |
Make p the same (2) x 2 = (3) |
Before |
4 u |
1 u |
2 u |
Change |
+ 284 |
+ 591 |
+ 1182 |
After |
2 p |
1 p |
2 p |
(1) = (3)
4 u + 284 = 2 u + 1182
4 u - 2 u = 1182 - 284
2 u = 898
1 u = 898 ÷ 2 = 449
From (2)
1 p = 449 + 591 = 1040
Total amount raised by Primary 5
= 2 p
= 2 x 1040
= $2080
Answer: $2080