Question

A trader mixes three varieties of refined oil costing rs. 100, rs. 40 and rs. 60 per litre in the ratio 2:4:3 in terms of litre, and sells the mixture at rs. 66 per litre. What percentage of profit does he make? (1) 12% (2) 10% (3) 9% (4) 8%

Answer 1

Answer:

2)10%

Step-by-step explanation:

1st oil total cost :100x2=200

2nd oil total cost:40x4=160

3rd oil total cost:60x3=180

total cost of oil=200+160+180=540

taking the ratio constant as 1 litre

therefore total volume of oil =2+3+4=9litres

cost of each litre of the mixture=540/9=60litres

price of each litre that he sold for=66

profit per litre =66-60=6

(6/60)x 100= percentage of profit=10%