Owen spent 14 of his money on drinks, 15 of the remaining money on a swiss roll and $12 on balloons. He had 12 of his money. How much money did he have at first?
| Drinks |
Remaining amount |
Total |
| 1x5 |
3x5 |
4x5 |
| |
Swiss Roll |
Balloons |
Left |
|
| |
1x3 |
4x3 |
|
| 5 u |
3 u |
12 u |
20 u |
Fraction of the amount that Owen had left after spending on drinks
= 1 -
14 =
34 Fraction of the remaining amount that Owen had left after spending on a swiss roll
= 1 -
15 =
45 The remaining amount is the combined repeated identity. Make the remaining amount the same. LCM of 3 and 5 is 15.
Amount that Owen had left
=
12 x 20 u
= 10 u
Amount that Owen spent on balloons
= 12 u - 10 u
= 2 u
2 u = 12
1 u = 12 ÷ 2 = 6
Total amount that Owen had at first
= 20 u
= 20 x 6
= $120
Answer(s): $120
