Domestic aluminium foil for food use is 15 × 10–6 m thickIn my local supermarket, a roll of foil measuring 10 m by 0.3 m costs ?1.65.Calculate the cost per tonne of the foil as purchased in the supermarket.Account for any difference between this cost and the raw material cost of?1000 per tonne.The density of aluminium is 2700 kg m–3.Help please.Thanks.
Need to work out the cost per tonne of the Al foilVol length width thickness 10 0.3 1510^-6 4.510^-5 m^3 As density weight / volume the weight of Al 2700 4.510^-5 0.1215 kg 1.2210^-4 tonne Price per tonne 1.65 / 1.2210^-4 13580 This is a lot larger than the 1000 for the RMC Reasons - the aluminium foil is manufactured adding to the cost - the volume sold in the supermarket is small - the produce needs to make a profit - the supermarket needs to make a profit - the aluminium foil has packaging associated with it
viscose is rayon it is treated same as cotton
