Co. was organized to sell a single product that carries a 45-day warranty against defects. Engineering estimates indicate that % of the units sold will prove defective and require an average repair cost of per unit. During 's first month of operations, total sales were units; by the end of the month, defective units had been repaired. The liability for product warranties at month-end should be

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With reference to the solutions, following things may be noted1) homogeneous solutions comprises of single phase.2) heterogeneous solution comprises of more than one phase.3) in colloidal solution, solute is evenly distributed in solvent. in such system, it is difficult to separate solute and solvent.4) in suspension, there is an uneven distribution of solute in solvent. in such system, solute and solvent gets separated on standing long.    blood is a homogeneous and colloidal solution,salad dressing is a heterogeneous and suspension solution.