A customer support job requires workers to complete a particular online form in 60 seconds. Les can finish the form in 70 seconds. What is his efficiency? Les's efficiency is nothing %. (Enter your response rounded to one decimal place.)

85.7%

Explanation:

Note that the requirements is that workers complete one form in 60 seconds, in one hour they have completed 60 forms x 60 minutes = 3600s for 60 forms.

But Les case is different, he can complete one form in 70 seconds, implying that in one hour he completes

70 seconds x 60 minutes = 4600 seconds. ie (3600/70 = 51.43 seconds per form)

The percentage difference is calculated by dividing the amount Les can complete in an hour by the workers standard x 100

(51.43/60 = 0.857 x 100 = 85.7%

Thus, Les is 85.7% efficient with the standards set by his employer.