Suppose that each of the 4 processors in an SMP (shared memory multi-processor) system is rated at 400 MIPS, what would be the apparent MIPS rating

Suppose that each of the 4 processors in an SMP (shared memory multi-processor) system is rated at 400 MIPS, what would be the apparent MIPS rating for a program that contains a purely sequential part that accounts for 22% of the instructions in the program and that must be completed before any of the remaining code. The remaining code can be partitioned into three independent parts (A, B, and C) where part A accounts for 30% of the instructions in the program, part B accounts for 18%, and part C accounts for 30%?