Observed cycle time is 4.8 min and performance rating is 110%. Normal time is most nearly:
- (A)2.64 min
- (B)5.28 min
- (C)7.92 min
- (D)10.6 min
Show worked solution
Answer: (B)
Rating adjustment gives 5.28 min.
Observed work is adjusted using the stated rating, allowance, or learning model.
Substitution and unit reduction give the reported value.
FE Reference Handbook — Work Measurement: Time Study
Why the other choices appear
- (A)This introduces an extra factor of 0.5 that is not present in the governing relation.
- (C)This value is 50% above the verified result; no stated conversion creates that change.
- (D)The units are retained, but an unsupported 2 multiplier changes the requested magnitude.