How can i find a unit rate when given a rate?

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Find the quotient with the restriction.

For the feasibility region shown below find the maximum value of the function p=3x+2y