Riordan spent
47 of his salary and gave $894 to his wife. Of the remaining amount, he saved
15 of it and gave
49 of it to his parents. He then donated
23 of what he had left away and gave the remaining $20 to his daughter. What was Riordan's salary?
Spent |
Wife |
Saved |
Parents |
Donated |
Daughter |
Total |
4 u |
3 u |
7 u |
|
$894 |
1 p |
4 p |
|
|
|
|
4x3 |
5x3 |
|
|
|
|
|
2x5 |
1x5 |
|
|
|
|
12 b |
10 b |
5 b $20 |
|
Amount that his daughter received = 5 b
5 b = 20
1 b = 20 ÷ 5 = 4
Amount of his salary given to his parents, his donations and his daughter
= 12 b + 10 b + 5 b
= 27 b
= 27 x 4
= $108
4 p = 108
1 p = 108 ÷ 4 = 27
Amount of his salary given to his savings, his parents, his donations and his daughter
= 1 p + 4 p
= 5 p
= 5 x 27
= $135
Amount of his salary given to his wife, his savings, his parents, his donations and his daughter
= 894 + 135
= $1029
3 u = 1029
1 u = 1029 ÷ 3 = 343
Riordan's salary
= 7 u
= 7 x 343
= $2401
Answer(s): $2401