Bob has 4 ratio 3 hats and scarfs he sell 25 hats he left with 7 ratio 9 hats and scarfs how many scarfs he has

Hats : Scarves
  4    :     3
 x3        x3
12 .   :    9

After selling 25 hats, 
Hats : Scarves 
  7     :    9


Find the difference in part for the hats :

12 - 7 = 5 parts
5 parts = 25 hats


Find 1 part :

5 parts = 25
1 part = 25 ÷ 5 
1 part = 5 


Find 9 parts (Scarves) :

1 part = 5
9 parts = 5 x 9
9 parts = 45


Bob has 45 scarves.

A. is the answer in this question

None of those are technically correct. 9.7 x 104 is actually 1,008.8, but if that answer was a choice, it would be that one. if you meant 9.7 times maybe a thousand or more or divided by 10 or more, than the answer choices would be correct, but other than that, they actually arent.