Answer:
Elsa sent 15, Lamar sent 30, and Keith sent 23
Explanation:
If x=Elsa, L=Lamar, and K=Keith
2x=L
x+8=K
x+x+8+2x= 68
4x+8=68
4x=60
x=15
Then you plug 15 into x, and solve for each person.
(15)2=L
(15)+8=K
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