The cost of making article is divided between material, labour and overhead in ratio 3:4:5 if cost of material is 33.60 then cost of article is

Cost of material labour & overheads is in the ratio 0f 3:4:5

if cost of material = 33.60

cost of labour = 4/3 * 33.60 = 44.8

cost of material = 5/3 * 33.60 = 56

cost of article = 33.60 + 44-8 + 56 = 134.4