For every 1 litre of water used to make a medicine, 200 ml of sucrose and 300ml of saline solution are used. Express the
h
amount of water, sucrose and saline solution needed as a ratio
in its simplest form.

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.