quality motor company is an auto repair shop that uses standards to control its labor time and labor cost. the standard labor cost for a motor tune up is given below. standard hours$=2\mathrm{.}50$ standard rate $=31$ standard cost $=77\mathrm{.}50.$ the record showing the time spent in the shop last week on motor tune ups has been misplaced. however the shop supervisor recalls that the $56$ tune ups were completed during the week, and the controller recalls the following variance data relating to tune ups. labor rate variance $=146$ F and labor spending variance $=102$ U$.$ determine the number of actual labor hours spent on tune ups during the week. then determine the actual hourly pay rate for tune$-$ups last week.