An activity with a learning rate of 0.8 takes 30 hours for the first six units.How long will it take to complete this task for the 12th time?
A)2.985 hours
B)3.055 hours
C)3.135 hours
D)3.325 hours

Question

Quizplus · Accepted Answer

We can use the formula:

Time taken to complete n units = (n/learning rate) x (time taken to complete 1 unit)

For the first 6 units, we know:

Time taken to complete 6 units = (6/0.8) x 30 hours = 225 hours

Now we can use the same formula to find the time taken to complete the 12th unit:

Time taken to complete 12th unit = (12/0.8) x (30/6) hours

= 15 x 5 hours

= 75 hours

Therefore, the best choice is C, 3.135 hours.

An Activity with a Learning Rate of 0