50%
60%
835%
100%
✅ The correct answer is D.
Under Gantts task and bonus plan no bonus is payable to a worker if his efficiency is less than 100%. If a worker takes more time than the standard time to complete the task (i.e., his efficiency is below 100%), he is given wages for the time taken by him and if a worker takes the standard time to perform the task (i.e., efficiency is 100%), he is given wages for the standard time and a bonus of 20% on the wages earned.
Under Gantts task and bonus plan no bonus is payable to a worker if his efficiency is less than 100%. If a worker takes more time than the standard time to complete the task (i.e., his efficiency is below 100%), he is given wages for the time taken by him and if a worker takes the standard time to perform the task (i.e., efficiency is 100%), he is given wages for the standard time and a bonus of 20% on the wages earned.