Question

A vessel is filled with liquid, 3 parts of which is water and 5 parts is
milk. What part of the mixture must be drawn off and replaced with
water so that the mixture becomes half water and half milk?​

Answer 1

Answer:

A vessel is filled with liquid ,3 parts of which are water and 5 parts are syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup? 3). In two types of stainless steel , the ratio of chromium and steel are 2:11 and 5:21 respectively.

Answer 2

Suppose the vessel initially contains 8 liters of liquid.

Let x liters of this liquid be replaced with water.

Water in new mixture = (3-3x/8+x)

Syrup in new mixture = (5-5x/8)

Then (3-3x/8+x) = (5-5x/8)

5x + 24 = 40 - 5x

10x=16

==>x=8/5

So part of mixture replaced is 8/5*1/8=1/5