Three girls gave an equal amount of money to buy a gift for Warren. Nicole used
15 of her money. Xylia used
35 of her money and Joelle used
45 of hers. They had a total of $855 at first. How much was the gift?
| |
Nicole |
Xylia |
Joelle |
Total |
| Before |
5x12 =
60 u |
5x4 =
20 u |
5x3 =
15 u |
95 u ($855) |
| Change |
- 1x12 =
- 12 u |
- 3x4 =
- 12 u |
- 4x3 =
- 12 u |
- 36 u |
| After |
4x12 =
48 u |
2x4 =
8 u |
1x3 =
3 u |
59 u |
The three girls gave equal amount of money to buy the gift. Make the amount that each spent the same. LCM of 1, 3 and 4 is 12.
Total amount that three girls had at first
= 60 u + 20 u + 15 u
= 95 u
95 u = 855
1 u = 855 ÷ 95 = 9
Cost of the gift
= 3 x 12 u
= 36 u
= 36 x 9
= $324
Answer(s): $324
