# Question: molly has a bottle of 15 strength cordial and wants...

###### Question details

Molly has a bottle of 15% strength cordial and wants to make it stronger. She adds an amountof 100% strength cordial to her bottle to make a total volume of 2 litres of cordial drink. If the final strength of the drink is 25% cordial, find the amount of 100% strength cordial that Molly added.