How many litres of pure acid are there in 12 litres of a 40% solution  Choose the most appropriate option
A) 3.6	B) 4.8	C) 3.5	D) 2.3	E) 4.4
Explanation:
Question of this type looks a bit typical, but it is too simple, as below... It will be 12 * 40/100= 
<gadget id="calculator">12 * 40/100</gadget>
<output>24/5 = around 4.8</output>
4.8 Answer: Option 4.8
<result>B</result>
How many litres of pure acid are there in 12 litres of a 40% solution