Question

85 litres of a mixture contains milk and water in the ratio27:7 how much more water is to be added to get a new mixture containing milk and water in the ration 3:1

Answer 1

Let,

Ratio of milk = 27x
ratio of water = 7x
---------------------------------

85 = 27x + 7x 

85 = 34x 

85/34 = x 

2.5 =x

Now,

Ratio of milk and water = (2.5×27) : (2.5×7)
                                      = 67.5 : 17.5
                                      =  675 : 175


Now, 

Let y should be added, due to which the ratio become 3:1

Then,

$\frac{675}{175 + y} = \frac{3}{1}$

1× 675 = 3( 175 + y) 

675 = 525 + 3y 

675 - 525 = 3y 

150 = 3y 

150/3 = y 

50= y 


Then,

50 should be added to water.





i hope this will help you



-by ABHAY