The line graph shows the number of vacancies of accountants in a certain company. Study the diagram and answer the following questions.

By what percent does the vacancies got increased in year 2016 from 2011?

If the sales tax be reduced from $$ 3{1\over2}$$ % to $$ 3{1\over3}$$%, what difference does it make to person who purchases an article whose marked price is Rs.8400? 

O is the orthocentre of ΔABC. If ∠BOC=110°, ∠BAC is equal to

In how many years will Rs 2000 become Rs 2420 at 10 percent compound annual interest?

In a town, 60% of the total voters is male and the rest are females. If 60% of the males are literate and 70% of the females are literate, then by what percent is the number of literate males more than that of illiterate females?

If the number x3339 is divisible by 11, what is the face value of x?

In a polygon, the sum of the interior angles is double the sum of the exterior angles. What is the number of sides of the polygon?

If the clock is at 3:17, what time will be seen in the mirror?