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 $369 while Primary 1 raised another $542. During the entire charity event, Primary 5 raised 3 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 3 = (3) |
Before |
6 u |
1 u |
3 u |
Change |
+ 369 |
+ 542 |
+ 1626 |
After |
3 p |
1 p |
3 p |
(1) = (3)
6 u + 369 = 3 u + 1626
6 u - 3 u = 1626 - 369
3 u = 1257
1 u = 1257 ÷ 3 = 419
From (2)
1 p = 419 + 542 = 961
Total amount raised by Primary 5
= 3 p
= 3 x 961
= $2883
Answer: $2883