Question

Dev buys 16 lts of milk at rs. 4.80 per ltr and add 4 lts of water. If he want a profit of 12.5% at what rate should he sell the mixture

Answer 1

price of 16l milk= Rupees 77

To find 12.5% of 77

77/12.5%x100

=6.16

=77+6.16=83.16 Rupees

=83 Rupees is the answer

Answer 2

Answer:

$s.p \: \: of \: milk = (4.80 + 0.60) \\ = 5.40rs \\ new \: rate = \{ 16 \div (16 + 4) \times 5.40 \\ = (16 \div 20) \times 5.40 \\ = 4 .32rs per \: litre.$

total S.P. of milk

then,new rate = {total milk/( milk+water)} ×seling price of milk.

and, this is the final answer 4.32rs/litre.