Tom spent 17 of his money on balloons, 14 of the remaining money on a swiss roll and $22 on drinks. He had 12 of his money. How much money did he have at first?
| Balloons |
Remaining amount |
Total |
| 1x2 |
6x2 |
7x2 |
| |
Swiss Roll |
Drinks |
Left |
|
| |
1x3 |
3x3 |
|
| 2 u |
3 u |
9 u |
14 u |
Fraction of the amount that Tom had left after spending on balloons
= 1 -
17 =
67 Fraction of the remaining amount that Tom had left after spending on a swiss roll
= 1 -
14 =
34 The remaining amount is the combined repeated identity. Make the remaining amount the same. LCM of 6 and 4 is 12.
Amount that Tom had left
=
12 x 14 u
= 7 u
Amount that Tom spent on drinks
= 9 u - 7 u
= 2 u
2 u = 22
1 u = 22 ÷ 2 = 11
Total amount that Tom had at first
= 14 u
= 14 x 11
= $154
Answer(s): $154
