The question contains a statement followed by Quantity I, Quantity II, and Quantity III. Read the statements carefully and answer the questions accordingly. 

Quantity I: Ajay, anil, akash, arun and ankith are five friends who went to the party. Their average age is 43 years. The ratio of the present ages of arun and ankith is 4 : 5. The ratio of present ages of Ajay and anil is 4 : 5. Four years from now the ratio of age of Ajay and 6 years from now the age of akash will be 4 : 5. Four years from now the age of Ajay will be 10 years less than the present age of ankith. Find the average of ages of arun and ankith.

Quantity II: Ratio of the ages of Ramesh and mahesh after 4 years is 13:10 and the present age of sagar is 6 years more than that of mahesh. If the ratio of the ages of ramesh and sagar after 12 years is 10:9, then find the average of the present age of mahesh and sagar.

Quantity III:The ratio of the ages of M and N after 10 years is 7:9 and P’s age is half of the present age of N. The ratio of P and Q after 5 years is 3:4 and the average of the present age of P and Q is 16 years. What is the present age of M?