Multiple choice

A milk seller has 15 litres of pure milk. How many litres of water, which is available free of cost, have to be added to it so that he gets a 25% profit by selling the mixture at the cost price of pure milk ?

  1. 2.5 liter

  2. 3.75 liter

  3. 4 liter

  4. 4.25

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let water added = w liters. Total mixture = 15+w liters. To get 25% profit selling at CP of pure milk, he must sell 15+w liters at price of 15 liters. So (15+w) should equal 125% of 15 (since profit = 25%). 15+w = 1.25×15 = 18.75. Therefore w = 3.75 liters.

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