Three girls gave an equal amount of money to buy a present for Ryan. Penelope used
14 of her money. Opal used
35 of her money and Tammy used
45 of hers. They had a total of $664 at first. How much was the present?
| |
Penelope |
Opal |
Tammy |
Total |
| Before |
4x12 =
48 u |
5x4 =
20 u |
5x3 =
15 u |
83 u ($664) |
| Change |
- 1x12 =
- 12 u |
- 3x4 =
- 12 u |
- 4x3 =
- 12 u |
- 36 u |
| After |
3x12 =
36 u |
2x4 =
8 u |
1x3 =
3 u |
47 u |
The three girls gave equal amount of money to buy the present. Make the amount that each spent the same. LCM of 1, 3 and 4 is 12.
Total amount that three girls had at first
= 48 u + 20 u + 15 u
= 83 u
83 u = 664
1 u = 664 ÷ 83 = 8
Cost of the present
= 3 x 12 u
= 36 u
= 36 x 8
= $288
Answer(s): $288
