Question 7
A vendor is selling three kinds of drinks namely: milk, juice, and soda. It is known that he has one bucket of soda and the total number of buckets of milk and juice is five. If the volumes of the buckets are 18, 19, 21, 23, 25 and 34 litres respectively and he has twice as much milk as he has juice. What is the volume, in litres, of the bucket containing soda?