Question

Which ratios are equal to each other?

Answer 1

D. 1 x 4= 4
16x4=64 therefore they are equal

Answer 2

The only answer that equal to each other is D. 1:16 and 4:64
    1               4
   ----     =     ----
   16             64

1  x  l4l = 4
16 x l4l = 64