question_answer

Two tank contain petrol and diesel. In the first tank the ratio of petrol to diesel is 7:4 and in the second tank the ratio is 4:5. A third tank of capacity 38 L is filled with these two tanks so that the mixture contains the ratio of petrol to diesel is 5:4. How many litres are taken from the second tank?

A)  11 L

B)  12 L

C)  13 L

D)  16 L

E)  None of these