Question

Which would........ I need the answer

Answer 1

1 in =10 feet

the 2nd one is ft=ft, it does not make sense, for it cannot diminsh because it is exactly the same 

Answer 2

Your answer would be [ 1 in. = 10 ft. ] because 1 foot = 12 in., and that is really close. 
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And the other one just does not make since at all!   
I mean, seriously, 1 ft. = 500 ft.????
No way!
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So, your answer would be [ 1 in. = 10 ft. ] 

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Glad I could help, and good luck!
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