1 votes 1 votes A milkman has 50 litres of milk. Find quantity of water to be added in it so that he gets 20% profit by selling at its cost price? Quantitative Aptitude ratio-proportion cost-price-selling-price + – Pooja Palod asked Dec 11, 2015 Pooja Palod 1.8k points 761 views answer comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Let $x$ be the cost price per litre. $1.2 \times 50 \times x = (50 + y) \times x \\ \implies y = 10.$ Arjun answered Dec 11, 2015 Arjun 8.6k points comment Share See all 0 reply Please log in or register to add a comment.