What is the average number of visitors who had visited the park of age group less than or equal to 20 years in the months of 2012 and January 2013 together?

Number of visitors who had visited the park of age group less than or equal to 20 years in the months of :

Sep : $$\frac{40}{100} \times 55,000$$ = 22,000

Oct : $$\frac{52}{100} \times 75,000$$ = 39,000

Nov : $$\frac{55}{100} \times 65,000$$ = 35,750

Dec : $$\frac{60}{100} \times 126,000$$ = 75,600

Jan : $$\frac{65}{100} \times 120,000$$ = 78,000

=> Total visitors = 22000 + 39000 + 35750 + 75600 + 78000 = 2,50,350

$$\therefore$$ Required average = $$\frac{250350}{5} = 50070$$