The first unit produced in a process takes 480 hours.As the number of units produced doubles,production time decreases by 18%.Using the arithmetic approach,calculate the production time for the 16th unit.
A)217 hours
B)328 hours
C)128 hours
D)156 hours

Question

Quizplus · Accepted Answer

The production time for each subsequent batch of units decreases by 18% as the number of units doubles. Starting with 480 hours for the first unit, the time for the 2nd unit (or the first doubling) would be 480 * 0.82 (since an 18% decrease is the same as retaining 82% of the original time). For the 16th unit, which represents 4 doublings (2^4 = 16), we apply the 18% decrease four times: 480 * 0.82^4 = 217 hours.

The First Unit Produced in a Process Takes 480 Hours