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 $250 while Primary 1 raised another $477. During the entire charity event, Primary 4 raised 2 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 2 = (3) |
Before |
6 u |
1 u |
2 u |
Change |
+ 250 |
+ 477 |
+ 954 |
After |
2 p |
1 p |
2 p |
(1) = (3)
6 u + 250 = 2 u + 954
6 u - 2 u = 954 - 250
4 u = 704
1 u = 704 ÷ 4 = 176
From (2)
1 p = 176 + 477 = 653
Total amount raised by Primary 4
= 2 p
= 2 x 653
= $1306
Answer: $1306