Hilda has 2 times as many buttons as Mary. Mary has
38 as many buttons as Shannon. If the three of them have a total of 85 buttons, how many buttons does Hilda have?
Hilda |
Mary |
Shannon |
2x3 |
1x3 |
|
|
3x1 |
8x1 |
6 u |
3 u |
8 u |
The number of buttons that Mary has is repeated. Make the number of buttons that Mary has the same. LCM of 1 and 3 is 3.
Total number of buttons that the three of them have
= 6 u + 3 u + 8 u
= 17 u
17 u = 85
1 u = 85 ÷ 17 = 5
Number of buttons that Hilda has
= 6 u
= 6 x 5
= 30
Answer(s): 30