Parallel processing uses two or more computers working to together to solve a problem. Parallel processing efficiency depends on the program. A single processor must complete certain parts of the program while the other processors wait for results. This creates some bottlenecks, which are represented by a percentage of the program that must operate sequentially. If Computer A can solve the problem in 8 hours, Computer B can solve the problem in 6 hours, and the required sequential operation of the program is 20%, how many hours would it take both computers working together in parallel processing to solve the problem?

Hint: Since 20% of the program requires one computer to work by itself, you will use the faster computer, Computer B, to work on that part of the program; then, you will use both computers to complete the remaining 80% of the program.