argha wrote:

Hi,

Sorry but did not understand your question.

Why are you assuming this: M1 : M3= 1 : 1 and M2 : M3 = 4 : 1???

Regards

Argha

M1 = metal costing 60/kg , M2 = metal costing 75/ kg and M3= 100/ kg.

sp = 96

profit = 20%

thus cp = 96/1.2 = 80

Using allegation, M1 : M3 = (100-80)/(80-60) = 20/20= 1:1

similarly, M2 : M3 = (100-80)/ ( 80-75) = 20/5 = 4: 1

Thus, M1 : M2 : M3 = 1: 4 : 1

where am i wrong ?