6. (10 points). Performance Bicycle Company provide bike tune-up services and uses standards to control its labor time and labor cost. The standard labor cost for a bike tune-up is given below: Standard Hours Standard Rate Standard Cost Bike tune-up 1.5 $30 $45 The record showing the time spent last month on bike tune-ups has been misplaced. However, the supervisor recalls that 210 tune-ups were completed during the month, and the controller recalls the following variance data relating to tune-ups: Labor rate variance $945 F Labor efficiency variance $750 U a. What is the number of actual labor-hou rs spent on tune-ups during the month? Show you calculations. b. What was the actual hourly pay rate for tune-ups last month? Show you calculations