Calculate the following: i) Standard time per piece of a job whose normal time is 5 minutes. ii) Number of pieces to be produced per day. iii) Efficiency of worker, for 190 jobs, he produced in a shift.

A worker in a manufacturing industry is expected to work for a minimum of 400 minutes, in an 8-hour shift. The remaining 80 minutes is meant for his personal and rest needs. Calculate the following:
i) Standard time per piece of a job whose normal time is 5 minutes.
ii) Number of pieces to be produced per day.
iii) Efficiency of worker, for 190 jobs, he produced in a shift.

Solution.

(i) Standard time per price of job = 5 x (480/400) = 6 minutes

(ii) Number of pieces to be produced per day = 480/6 = 80 piece of job or 400/5 = 80 piece

(iii) Efficiency of worker
= (190/80) x 100
= 237.50 %