Esther has 3 times as many cards as Rachel. Rachel has
47 as many cards as Anna. If the three of them have a total of 69 cards, how many cards does Esther have?
| Esther |
Rachel |
Anna |
| 3x4 |
1x4 |
|
| |
4x1 |
7x1 |
| 12 u |
4 u |
7 u |
The number of cards that Rachel has is repeated. Make the number of cards that Rachel has the same. LCM of 1 and 4 is 4.
Total number of cards that the three of them have
= 12 u + 4 u + 7 u
= 23 u
23 u = 69
1 u = 69 ÷ 23 = 3
Number of cards that Esther has
= 12 u
= 12 x 3
= 36
Answer(s): 36
