D
If you multiply 3 by 10 and add a zero onto the ten in the question that is 100 in half an hour, all you need to do then is multiply that answer by two to get your answer.
The answer may be 7 or 12
C
Explanation
I took the test.
IMproper fraction is what you need to covert it 2 cuz u multiply then add and u'll get it
