During a charity drive, Primary 6 raised 4 times as much money as Primary 1 on the first week. On the second week, Primary 6 raised another $220 while Primary 1 raised another $496. During the entire charity event, Primary 6 raised 2 times as much as Primary 1. What was the total amount raised by Primary 6?
|
Primary 6 (1) |
Primary 1 (2) |
Make p the same (2) x 2 = (3) |
Before |
4 u |
1 u |
2 u |
Change |
+ 220 |
+ 496 |
+ 992 |
After |
2 p |
1 p |
2 p |
(1) = (3)
4 u + 220 = 2 u + 992
4 u - 2 u = 992 - 220
2 u = 772
1 u = 772 ÷ 2 = 386
From (2)
1 p = 386 + 496 = 882
Total amount raised by Primary 6
= 2 p
= 2 x 882
= $1764
Answer: $1764