The first unit produced in a process takes 400 hours.As the number of units produced doubles,production time decreases by 20%.Using the arithmetic approach,calculate the production time for the 64th unit.
A)320 hours
B)256 hours
C)105 hours
D)164 hours

Question

Quizplus · Accepted Answer

The production time decreases by 20% each time the number of units doubles. Starting from 400 hours for the first unit, the sequence of production times for the 2nd, 4th, 8th, 16th, 32nd, and 64th units is calculated by multiplying by 0.8 each time: 400, 320, 256, 204.8, 163.84, 131.072, and finally 104.8576 hours for the 64th unit, which rounds to 105 hours.

The First Unit Produced in a Process Takes 400 Hours