Question

A bakery owner turns on his doughnut machine at 8:30am. At 11:10am the machine has completed one third of the day's job. At what time will the doughnut machine complete the job?

Answer 1

Answer: 4:30 P.M

Step-by-step explanation: The machine completes 1/3 of the work in (11:10 A.M - 8:30 AM) 2 hr 40 min = 8/3 hrs.

So the machine will complete the total work in = (8/3)/(1/3)(8/3)/(1/3) = 8 hrs

The machine started at 8:30 a.m and will complete the work in 8 hrs

So the job will be completed on 4:30 P.M