Mary spent $315 on one notebook. Of the remaining salary, she spent
14 on a speaker. She had
25 of the original total left. How much was her salary?
| Notebook |
Speaker |
Left |
Remaining total |
Total
|
| $315 |
1x2 |
3x2 |
4x2 |
|
| |
|
2x3 |
|
5x3 |
| 7 u |
2 u |
6 u |
|
15 u |
Fraction of the remaining salary left
= 1 -
14 =
34 34 of the remaining salary =
25 of the total salary
3x24x2 of the remaining salary =
2x35x3 of the total salary
68 of the remaining salary =
615 of the total salary
Total salary = 15 u
Amount left = 6 u
Amount spent on the speaker = 8 u - 6 u = 2 u
Amount spent on the notebook = 15 u - 6 u - 2 u = 7 u
7 u = 315
1 u = 315 ÷ 7 = 45
Her salary
= 15 u
= 15 x 45
= $675
Answer(s): $675
