Multiple choice general knowledge Divide 30 by 1/2 and add 10. What is the answer? 25 70 35 40 Reveal answer Fill a bubble to check yourself B Correct answer Explanation Dividing 30 by 1/2 means multiplying 30 by 2 (since dividing by a fraction is equivalent to multiplying by its reciprocal). This gives 60, and adding 10 yields 70.