Respuesta :
The total cost for the entire life span of the deep fryer  is computed below:
Brand P total cost =Purchase price + total electricity costÂ
                = $144+($0.49x8x12x6)
                =$426.24
Brand Q total cost =(Purchase price x 3)+ total electricity cost
                =( $37.5x3)+($0.75x 8x12x6)
                =  $544.5
Difference = Brand Q-Brand P
          =$544.5-$426.24
          =$118.26
Robert will have to choose Brand P because it will be cheaper by $118.26 than Brand Q in their entire lifetime.
          Â
Brand P total cost =Purchase price + total electricity costÂ
                = $144+($0.49x8x12x6)
                =$426.24
Brand Q total cost =(Purchase price x 3)+ total electricity cost
                =( $37.5x3)+($0.75x 8x12x6)
                =  $544.5
Difference = Brand Q-Brand P
          =$544.5-$426.24
          =$118.26
Robert will have to choose Brand P because it will be cheaper by $118.26 than Brand Q in their entire lifetime.
          Â
the correct answer is A. Brand P will be $118.26 cheaper than Brand Q.