Wendy has 2 times as many buttons as Jaslyn. Jaslyn has
56 as many buttons as Erika. If the three of them have a total of 63 buttons, how many buttons does Erika have?
Wendy |
Jaslyn |
Erika |
2x5 |
1x5 |
|
|
5x1 |
6x1 |
10 u |
5 u |
6 u |
The number of buttons that Jaslyn has is repeated. Make the number of buttons that Jaslyn has the same. LCM of 1 and 5 is 5.
Total number of buttons that the three of them have
= 10 u + 5 u + 6 u
= 21 u
21 u = 63
1 u = 63 ÷ 21 = 3
Number of buttons that Erika has
= 6 u
= 6 x 3
= 18
Answer(s): 18