Question

b)
A injection is filled with liquid medicine, 3 part of which is water and 5 part is
Hydroxychloroquine. How much of the mixture must be drawn off and replaced with water
so that the mixture may be half water and half Hydroxychloroquine?
a)
b)
c)
d)​

Answer 1

In vessel, 3 parts are water, and 5 parts syrup.

So total it is divided in 8 parts.

So, water = 3/8 and syrup = 5/8

To make them equal, 1/2 = 4/8 of both water and syrup,

suppose we replace x part of liquid by water then,

and then both must be same.

water in drawn part : 3x/8 and syrup : 5x/8

After replacement : water = water before replacement - 3x/8(removed) + x(replaced)

syrup=syrup before replacement - 5x/8(removed)

To make them equal :

water before replacement + 5x/8 = syrup before replacement - 5x/8

So, syrup before replacement - water before replacement = 10x/8 = 5x/4

So, 5/8 part - 3/8 part = 5x/4

So, 1/4 part = 5x/4

So, x = 1/5 part

Here is your answer mate

please follow me

please mark it as brainlist

please thanks my all answers