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 Halsey 50-50 plan, wages for the job will be

Answer: Option B

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 Halsey 50-50 plan, wages for the job will be $$\text{TR}+\frac{\text{S}-\text{T}}{2}\times \text{R}.$$