Marion has 4 times as many buttons as Anna. Anna has
57 as many buttons as Tammy. If the three of them have a total of 256 buttons, how many buttons does Tammy have?
Marion |
Anna |
Tammy |
4x5 |
1x5 |
|
|
5x1 |
7x1 |
20 u |
5 u |
7 u |
The number of buttons that Anna has is repeated. Make the number of buttons that Anna has the same. LCM of 1 and 5 is 5.
Total number of buttons that the three of them have
= 20 u + 5 u + 7 u
= 32 u
32 u = 256
1 u = 256 ÷ 32 = 8
Number of buttons that Tammy has
= 7 u
= 7 x 8
= 56
Answer(s): 56