A man mixes 5 liters of milk at Rs 60/ltr with 6 liters of milk at Rs 58/ltr. How many liters of water should be added to make the average of mixture Rs.48/ltr?
Answer & explanation
Correct answer: option 3
Cost of milk when 2 quantities are mixed:
\(\frac{(5 × 60) + (6 × 58)}{11}\) = \(\frac{648}{11}\)
Now, using allegation method:
So, in 11 ltr of milk, 2.5 ltr of water should be added.