A subdivision is planned for forty houses,each with its own in-ground swimming pool.A contractor estimates it will take him 30 hours to build the first pool and that there is a 90% learning curve associated with this process.
-How long will it take to build the last pool?
A)27.2 hours
B)23.9 hours
C)20.5 hours
D)17.1 hours

Question

Quizplus · Accepted Answer

The learning curve effect implies that each time the number of pools doubles, the time taken per pool reduces by 10%. Using the formula for the learning curve, Tn = T1 * n^(log(learning rate)/log(2)), where T1 is the time for the first pool, n is the pool number, and the learning rate is 0.9, we find that the time for the 40th pool is approximately 17.1 hours.

A Subdivision Is Planned for Forty Houses,each with Its Own