Question 3 (10+10= 20 marks) Given below are two major activities for a road construction project. Calculate the unit rates for these following activities based on the information given. (a) Excavation of soil for 60 m of soil Item Excavation Loading & Transportation Description Excavator Skilled labor with 0.5 day of work Wheel Loader Truck (3 Cube) for three days Unskilled labor with 0.5 day of work Excavator Unskilled labor of 2 days' work Motor Grader Unskilled Labor 0.4 days of work Quantity 4 2 1.5 4 3 3 3 0.3 1 Unit hours Nos hours Nos Nos hours Nos hours Nos Unit rate $ 875/day $ 55/hour $ 520/day $ 400/ day $ 30/ hour $ 875/day $ 30/hour $ 800/day S 30/ hour Piling available soil Trimming & cambering excavated surface (b) Gravel filling for 180 m Item Gravel Excavator Motor Grader Skilled labour for double handling Water bowser full day Quantity (Consider a compaction factor of 1.42) 10 6 3 3 Unit m hours hours days Nos Unit rate $ 75/ m $ 875/day $ 800/day $ 55/hour $ 600/ day 10 6 3 Excavator Motor Grader Skilled labour for double handling Water bowser full day Truck - 3 Cube Vibrating roller hours hours days Nos km hours $ 875/day $ 800/day $ 55/hour $ 600/ day $ 8/km $ 675/ day 3 310