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?

1-[5-{2+(-5+6-2)2}] is equal to 

Given that, 10 % of A's income = 15 % of B's income = 20 % of C's income. If sum of their incomes is ₹ 7800, then B's income is : 

Difference of two numbers is 1890. If 12.5% of one number is 17.5% of the other number, Find the two numbers.

The average salary of 12 employees in a company was recorded to be ₹20,000. If the salary of the manager is also included, then the average salary increases by ₹2,000. Find the salary of the manager.

Directions: The following bar graph shows the percentage breakup of a Sunil’s salary from year 2012 to 2016. With the given information, find the following questions.

What approx. percentage of average money spend by Sunil on food to that of average money saved by him during all these years if his salary per annum was ₹ 5,00,000

Directions: Read the following table and answer the questions below it:

In which year was the total disbursement of loans of banks A and B exactly equal to the total disbursement of loans of banks C and D ? 

The Median of an isosceles triangle ΔABC is AD and ∠A = 110 °, AB = AC, find the value of ∠ADB.