Katrina has 85/5 = <<85/5=17>>17 marbles.

Twice as many marbles as Katrina is 17 x 2 = <<17*2=34>>34

Amanda has 34 -12 = <<34-12=22>>22 marbles.

Mabel has 85 - 22 = <<85-22=63>>63 more marbles than Amanda

# Answer

63
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Amanda needs 12 more marbles to have twice as many marbles as Katrina, and Mabel has 5 times as many marbles as Katrina. If Mabel has 85 marbles, how many more marbles does Mabel have than Amanda?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
63
Amanda needs 12 more marbles to have twice as many marbles as Katrina, and Mabel has 5 times as many marbles as Katrina. If Mabel has 85 marbles, how many more marbles does Mabel have than Amanda?
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