If (R) is the base rate guaranteed per hour, (S) is the standard time for the job and (T) is the actual time, then according to Rowan plan, wages for the job will be

Answer: Option D

If (R) is the base rate guaranteed per hour, (S) is the standard time for the job and (T) is the actual time, then according to Rowan plan, wages for the job will be $$\text{TR}+\frac{\text{S}-\text{T}}{\text{S}}\times \text{R}.$$