Answer:
a/ 5
b/ 2
c/ 6
d/ 10
Explanation:
For A you can see that 5 divided by 1 equal 5, and 10 divided by 2 = 5, so the scale factor is 5
for B you can see that 10 divided by 5 = 2, and 12 divided by 6 = 2, so the scale factor is 2.
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