Consumer Math Question - I have no idea how to do this. :/ (No, this isn't a quiz question. I change all the variables in the problem, I'd just like to know how to actually solve this without backtracking with the answer.)

Your fixed expenses are $3578.25 a month. You saved 4 months worth in an emergency fund, investing 25% in a savings account and the rest in a 60 day CD at 4.3% APR. How much total interest accrues over 60 days?

Question

Consumer Math Question - I have no idea how to do this. :/ (No, this isn't a quiz question. I change all the variables in the problem, I'd just like to know how to actually solve this without backtracking with the answer.)

Your fixed expenses are $3578.25 a month. You saved 4 months worth in an emergency fund, investing 25% in a savings account and the rest in a 60 day CD at 4.3% APR. How much total interest accrues over 60 days?

mathmale · Answer

Calculate the interest earned on each of the two investments, separately, and then sum them up.

What is "4 months worth of fixed expenses" equal to?

What is the formula for calculating simple interest, when principal P, annual interest rate r, and number of years  t   are all given?

solarcrane · Answer

The formula would be I=prt. 

So what I would so is multiply 3578.25 by 4? Then multiply that by .25 and then by 3.3%APR (I forgot to type that into the question) and then times that by 2/12? Then do the same for the second part?