How would I go about solving this problem? I have done these type of problems in excel using some formulas but we have also used equations. How would I go about solving this ?

Question 11 In a certain election, the total time a voter takes to get to a voting booth is independent from the total time a voter takes to fill out the ballot in the voting booth and exit the voting process. We model the total minutes a voter takes to get to a voting booth as Normall30,8). In addition, we model the total minutes a voter takes to fill out the ballot in the voting booth and exit the voting process as Normal(5,1.5). What is the probability that a voter takes more than 45 minutes to complete the entire voting process (i.e., total time a voter takes to get to a voting booth plus the total time a voter takes to ll out the ballot in the voting booth and exit the voting process)