Question

A doshonest milkman bought 20 litre of milk at rs 10 per litre. He added 5 litre of water to it and sold the water -mixed milk at Rs10 per litre.What was his profit​

Answer 1

A doshonest milkman bought 20 litre of milk at rs 10 per litre. He added 5 litre of water to it and sold the water -mixed milk at Rs10 per litre.What was his profit.

solution:

let C.P. of 1 litre milk be re:1

then s.p. of 1 litre of the mixture =re.1 gain

=25%.

C.P of 1 litre mixture= re.(100/125x1)=4/5

by the rule of aligation, we have ;

therefore,ratio of milk to water=4/5:1/5=4:1

hence, precentage of water in the mixture=(1/5x100)% = 20 %.

Answer 2

Answer:

hi my name is Rudra

my age is 13

what is your name?