Question

A test tube contains a liquid of red colour and another test tube contains
an equal amount of water. To make a solution 20 ml of the liquid of red
colour is poured into the second test tube. Two third of the so formed
solution poured from the second into the first. If the liquid in the first
test tube is four times that in the second then the quantity of water was
taken initially is:​

Answer 1

Answer:

20 g of the acid is poured into the second test tube. Then, two- third of the so formed solution is poured from the second tube into the first.

Answer 2

Answer:

100

2/3(20+x)+(x-20)=4(1/3(20+x))

x=100