Zara has 2 times as many marbles as Rachel. Rachel has
56 as many marbles as Anna. If the three of them have a total of 126 marbles, how many marbles does Zara have?
| Zara |
Rachel |
Anna |
| 2x5 |
1x5 |
|
| |
5x1 |
6x1 |
| 10 u |
5 u |
6 u |
The number of marbles that Rachel has is repeated. Make the number of marbles that Rachel has the same. LCM of 1 and 5 is 5.
Total number of marbles that the three of them have
= 10 u + 5 u + 6 u
= 21 u
21 u = 126
1 u = 126 ÷ 21 = 6
Number of marbles that Zara has
= 10 u
= 10 x 6
= 60
Answer(s): 60
