During a charity drive, Primary 5 raised 6 times as much money as Primary 1 on the first week. On the second week, Primary 5 raised another $380 while Primary 1 raised another $508. 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 |
6 u |
1 u |
2 u |
Change |
+ 380 |
+ 508 |
+ 1016 |
After |
2 p |
1 p |
2 p |
(1) = (3)
6 u + 380 = 2 u + 1016
6 u - 2 u = 1016 - 380
4 u = 636
1 u = 636 ÷ 4 = 159
From (2)
1 p = 159 + 508 = 667
Total amount raised by Primary 5
= 2 p
= 2 x 667
= $1334
Answer: $1334