Three girls used the same number of pearls to make necklaces. Opal used
35 of her pearls, Risa used
25 of hers and Jaslyn used
23 of hers. They had a total of 204 pearls at first. How many pearls did each girl use?
Make the numerators the same.
LCM of 3, 2 and 2 = 6
35 Opal's pearls =
25 Risa's pearls =
23 Jaslyn's pearls
3x25x2 Opal's pearls =
2x35x3 Risa's pearls =
2x33x3 Jaslyn's pearls
610 Opal's pearls =
615 Risa's pearls =
69 Jaslyn's pearls
|
Opal |
Risa |
Jaslyn |
Before |
10 u |
15 u |
9 u |
Change |
- 6 u |
- 6 u |
- 6 u |
After |
4 u |
9 u |
3 u |
Total number of pearls at first
= 10 u + 15 u + 9 u
= 34 u
34 u = 204
1 u = 204 ÷ 34 = 6
Number of pearls that each girl used
= 6 u
= 6 x 6
= 36
Answer(s): 36