I need to find the easiest way to learn how to divide fractions

Which fraction below is equivalent to 10/12?

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?