A shovel having a 5-cy bucket whose cost per hour, including the wages to an operator,...

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A shovel having a 5-cy bucket whose cost per hour, including the wages to an operator, is $96 will excavate well-blasted rock and load trucks under each of the stated conditions. The maximum digging height of the machine is 35 ft. Determine the cost per cubic yard for each condition. (3) Condition Height of excavation (ft) Angle of swing (degrees) Efficiency factor (min per hr) (1) 10.2 (2) 20.5 90 45 23.7 120 30 (4) 27.3 1850 50 75 40 A shovel having a 5-cy bucket whose cost per hour, including the wages to an operator, is $96 will excavate well-blasted rock and load trucks under each of the stated conditions. The maximum digging height of the machine is 35 ft. Determine the cost per cubic yard for each condition. (3) Condition Height of excavation (ft) Angle of swing (degrees) Efficiency factor (min per hr) (1) 10.2 (2) 20.5 90 45 23.7 120 30 (4) 27.3 1850 50 75 40