The ratio in which a grocer must mix two varieties of tea worth ₹60 per kg and ₹65 per kg by selling the mixture at ₹68.20 per kg he may gain 10% is:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 3 : 2
Since there is a 10% profit, the cost price:
Cost Price (CP) = $\frac{68.2}{1.1}=62/kg$
Applying rule of allegation,
$\text{Ratio}=\frac{\text{Higher price-Mean price}}{\text{Mean price-Lower price}}$
$=\frac{65-62}{62-60}=\frac{3}{2}$