David and Albert both received an allowance from their father. David initially received 30% of the money. He then gave Albert $48, and was left with
15 as much money as Albert. What was the total amount of money given to the two boys?
|
David |
Albert |
Total |
Before |
3x3 = 9 u |
7x3 = 21 u |
10x3 = 30 u |
Change |
- 48 |
+ 48 |
|
After |
1x5 = 5 u |
5x5 = 25 u |
6x5 = 30 u |
The total amount of money remains the same.
30% =
30100 =
310Amount that David gave to Albert
= 9 u - 5 u
= 4 u
4 u = 48
1 u = 48 ÷ 4 = 12
Total amount of money given to the two boys
= 30 u
= 30 x 12
= $360
Answer(s): $360