The answer is 1. Division by a is equivalent to multiplication by 1/a. Or, to put that in other words (let b = 1/a), division by 1/b is equivalent to multiplication by b. So, division by 1/2 is equivalent to multiplication by 2. 1/2 multiplied by 2 = 1. Another way to look at it is: how many halves in one half? Answer = 1.
30/(1/2) = 30*2 =60
One
1
40
30 divided by 1/2 is 60.
40
50
Half is the same thing as .5 so you divide 30 by .5 and you get 60 then you add 10 so it is 70. TADA!!!
40
12
The answer is: 20/2 plus 30 = 40
40
30/0.5=60 60+10=70
40
40