Calculate the total price based on several key parts required to build a state-of-the-art gaming computer. The user will have...

Calculate the total price based on several key parts required to build a state-of-the-art gaming computer. The user will have the option of selecting different parts. For example, Windows 7, Windows 8 or Mac OS/X for Operating systems, 4 GB, 8 GB or 12 GB for RAM and 15”,17” or 22” Monitors.