Question

Alcohol costs Rs.3.50 per litre and kerosene oil costs Rs. 2.50 per litre. In what proportion should these be mixed so that the resulting mixture may be Rs. 2.75 per litre?

• A. 1 : 2
• B. 1 : 3
• C. 1 : 4
• D. 1 : 5
• E. None

Answer 1

The correct option is B

1 : 3

By the rule of allegation, we have required ratio $\frac{0.25}{0.75}=\frac{1}{3}$