Question 301
The way I learned to solve this problem was to put

is    %      6    %
__ = __     __ = ___  =30%
                
of   100    20   100

I put the 6 in the is spot, leave the percent blank cause you got to solve it, 20 in the of spot. Multiply 6 X 100 then divide by 20 and your answer is 30%.


is   %            10%
__ =__     ____ =____  =2

of  100    20     100

I leave the is blank so you can solve it, put 20 in the of spot,10% in the percent spot. Then you multiply 10% by 20 then divide by 100 then you get the answer 2. 

Let me know if you understand it that way. That is how I was taught to do the problem.