Eva spent
14 of her salary on a refrigerator and
34 of the remainder on a lamp. If she saved the remaining $81, how much was her salary?
Fraction of the salary spent on the refrigerator =
14 Fraction of the salary on the remainder
= 1 -
14 =
34 Fraction of the remainder on savings
= 1 -
34 =
14
| Refrigerator |
Remainder |
Total |
| 1x4 |
3x4 |
4x4 |
| |
Lamp |
Savings |
|
| |
3x3 |
1x3 |
|
| 4 u |
9 u |
3 u |
16 u |
The remainder and the total amount on the lamp and the savings are the same. Make the remainder and the total amount on the lamp and the savings the same. LCM of 3 and 4 is 12.
Total salary = 16 u
Amount spent of the refrigerator = 4 u
Amount spent on the lamp = 9 u
Amount of savings = 3 u
3 u = 81
1 u = 81 ÷ 3 = 27
Eva's salary
= 16 u
= 16 x 27
= $432
Answer(s): $432
