If it takes 50 hours to complete the first unit and the company knows from experience that the learning rate should be 0.85,how fast can they be expected to finish all ten units?
A)29 hours
B)500 hours
C)234 hours
D)356 hours

Question

Quizplus · Accepted Answer

The learning rate is 0.85, which means that each unit takes 85% of the time of the previous unit. So, the second unit will take 0.85 * 50 = 42.5 hours, the third unit will take 0.85 * 42.5 = 36.125 hours, and so on. The total time to complete all ten units will be 50 + 42.5 + 36.125 + ... + 0.85^9 * 50 = 29 hours (approximately).

If It Takes 50 Hours to Complete the First Unit