The cost of oil is Rs. 100 per litre. After adulteration using another oil, which costs Rs. 50 per litre. The mixture is sold at Rs. 95 per litre giving a profit of 20%. What is the ratio of two oils used in the mixture?

The cost of oil is Rs. 100 per litre. After adulteration using another

1.	The cost of oil is Rs. 100 per litre. After adulteration using another oil, which costs Rs. 50 per litre. The mixture is sold at Rs. 95 per litre giving a profit of 20%. What is the ratio of two oils used in the mixture?
A.	4 : 1
B.	7 : 5
C.	3 : 2
D.	5 : 4
Answer» C. 3 : 2