During a charity drive, Primary 5 raised 5 times as much money as Primary 2 on the first week. On the second week, Primary 5 raised another $206 while Primary 2 raised another $577. During the entire charity event, Primary 5 raised 2 times as much as Primary 2. What was the total amount raised by Primary 5?
|
Primary 5 (1) |
Primary 2 (2) |
Make p the same (2) x 2 = (3) |
Before |
5 u |
1 u |
2 u |
Change |
+ 206 |
+ 577 |
+ 1154 |
After |
2 p |
1 p |
2 p |
(1) = (3)
5 u + 206 = 2 u + 1154
5 u - 2 u = 1154 - 206
3 u = 948
1 u = 948 ÷ 3 = 316
From (2)
1 p = 316 + 577 = 893
Total amount raised by Primary 5
= 2 p
= 2 x 893
= $1786
Answer: $1786