Question

A certain microprocessor requires either 2, 4, 8, 12, or 16 machine cycles to perform various operations. Seventeen and one-half (17.5) percent of its instructions require 2 machine cycles, 12.5% require 4 machine cycles, 35% require 8 machine cycles, 20% require 12 machine cycles, and 15% require 16 machine cycles. What is the average number of machine cycles per instruction for this microprocessor

Answer 1

The answer is 8.45

since (17.5*2+12.5*4+35*8+20*12+15*16)/100 = 8.45