Three girls used the same number of seashells to make necklaces. Yoko used
35 of her seashells, Xandra used
45 of hers and Xuan used
23 of hers. They had a total of 583 seashells at first. How many seashells did each girl use?
Make the numerators the same.
LCM of 3, 4 and 2 = 12
35 Yoko's seashells =
45 Xandra's seashells =
23 Xuan's seashells
3x45x4 Yoko's seashells =
4x35x3 Xandra's seashells =
2x63x6 Xuan's seashells
1220 Yoko's seashells =
1215 Xandra's seashells =
1218 Xuan's seashells
| |
Yoko |
Xandra |
Xuan |
| Before |
20 u |
15 u |
18 u |
| Change |
- 12 u |
- 12 u |
- 12 u |
| After |
8 u |
3 u |
6 u |
Total number of seashells at first
= 20 u + 15 u + 18 u
= 53 u
53 u = 583
1 u = 583 ÷ 53 = 11
Number of seashells that each girl used
= 12 u
= 12 x 11
= 132
Answer(s): 132
