Answer:
Sarah got 66 dollars
Explanation:
Let Sarah be S, Gavyn be G, and Alex be A.
S+G+A = 110
S = 2G
G = 3A
We can multiply both sides by 2, so then it would be 2G = 6A
Since we know 2G = S, and 2G = 6A, we can say S = 6A
We can substitute S and G using the information we know.
Instead of S + G + A = 110, we can say 6A + 3A + A = 110
10 A = 110
A = 11
G = 3A = 33
S = 2G = 66
Hope this helps :)