Dana has 3 times as many buttons as Olivia. Olivia has
27 as many buttons as Shannon. If the three of them have a total of 60 buttons, how many buttons does Shannon have?
Dana |
Olivia |
Shannon |
3x2 |
1x2 |
|
|
2x1 |
7x1 |
6 u |
2 u |
7 u |
The number of buttons that Olivia has is repeated. Make the number of buttons that Olivia has the same. LCM of 1 and 2 is 2.
Total number of buttons that the three of them have
= 6 u + 2 u + 7 u
= 15 u
15 u = 60
1 u = 60 ÷ 15 = 4
Number of buttons that Shannon has
= 7 u
= 7 x 4
= 28
Answer(s): 28