What percent of 60 is 15?
show work
what number is 15% of 60?
show work
what percent of 50 is 18?
show work
12 is 90% of what number ?

Well the first one you have to divide both sides by 60 to get x. 
=60x/60=1500/60 
x=25
your answer is 25%

second one...think of it as 18/50. multiply by 2 and you get 36/100 
your answer is 36%

1st Answer is 25, 3rd is 36, 4th and 2nd one idk

The answer to your question is the last one