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 $210 while Primary 1 raised another $570. 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 |
+ 210 |
+ 570 |
+ 1140 |
After |
2 p |
1 p |
2 p |
(1) = (3)
4 u + 210 = 2 u + 1140
4 u - 2 u = 1140 - 210
2 u = 930
1 u = 930 ÷ 2 = 465
From (2)
1 p = 465 + 570 = 1035
Total amount raised by Primary 6
= 2 p
= 2 x 1035
= $2070
Answer: $2070