The auto repair shop of Quality Motor Company uses standards to control the labor time and labor cost in the shop The standard tabor cost for a motortune-up is given below Standard How Cost Motor tune-up 5550 512 10 The record showing the time spent in the shop last week on motor tune-ups has been misplaced. However, the shop supervisor recals that 130 tune-ups were completed during the week and the controller recals the following variance data relating to tune-ups Usborrado varance Labor spending van 3539 5583 Required: 1 Determine the number of actual box hours spent on tune ups during the week hours