A manuracturing prant produces towel. Ine tollowing annual data is obtained: Towelproduction=4,485000kgElectricitycost=R1,456000.00Naturalgascost=R172500.00Coalcost=R608700.00Operatingandmaintenancecost=R40000.00Rawmaterialcost=R3,280000.00Staffcost=R3,750000.00 Taking the interest rate to be 5 percent, determine: (a) The unit product cost (b) The specific energy cost (c) The fraction of the total annual cost due to energy consumption [4] [2]