Answer:
1. 14.5
2. 100/5=20. If you move the decimal places for both numbers, it would be the same thing. 10 and 0.5 were moved one decimal place to the left so the answer is still 20.
Explanation:
1.
14.5
3/43.5
-3
-------
13
-12
-------
15
Notice the decimal place of all the choices, they each match.