During a charity drive, Primary 5 raised 6 times as much money as Primary 2 on the first week. On the second week, Primary 5 raised another $240 while Primary 2 raised another $492. 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 |
6 u |
1 u |
2 u |
Change |
+ 240 |
+ 492 |
+ 984 |
After |
2 p |
1 p |
2 p |
(1) = (3)
6 u + 240 = 2 u + 984
6 u - 2 u = 984 - 240
4 u = 744
1 u = 744 ÷ 4 = 186
From (2)
1 p = 186 + 492 = 678
Total amount raised by Primary 5
= 2 p
= 2 x 678
= $1356
Answer: $1356