By selling 25 m of cloth a man gains the selling price of 5 m of cloth. Find the gain percent?

A person invested 1100 in a company at compound interest compounded semi-annually. He received 1331 after one year. The rate of interest per annum is 

Two numbers are respectively 30% and 40% less than a third number. What percent is the first number of the second?

The price of jewelry , passing through three hands. rises on the whole by 65 %. If the first and the second sellers earned 20 % and 25 % profit respectively, the profit earned by the third seller is 

Find co-ordinates of the midpoint of the segment joining points C (3, -5) and D ( -7,3) 

Directions:  Study the bar-graph given below & answer the questions.
Pie-chart given below shows the percentage distribution of total no. of boys in six different Schools.
Total Boys in all schools together = 6400

Total student in another school H is 250% more than the boys in school B and ratio of boys to girls in school H is 1 : 2. Then find number of boys in school H?

In what time will the annual simple interest rate at $$ {6{1\over4}{\%}}$$ , 72 rupees becomes 81 rupees?

If circumference of first circle is 132 cm and circumference of second circle is 110 cm then find the difference between area of both the circle?