20
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Ans:
20 / 1 = 20
20 / 2 = 10
20 / 1/2 = 40
Solution:
When the number gets doubled, the answer gets halfed, in this case it is the opposite, the number gets halfed the answer gets doubled. So we know 20 / 1 = 20, half 1 and you get 1/2, so 20 / 1/2 = 40
No because 1/2 of 40 is 20 and 40 divided by 1/2 is 80.
10
1/2 divided by 1/2 is 1. --- Almost a trick question. A half divided in half is indeed a quarter.
-10
20.