In a factory, 60 workers can stitch 120 m of clothes in 7 days, what length of clothes can be stiched by 70 workers in 5 days?

A,B, C are three points such that AB = 9 cm, BC = 11 cm and AC = 20 cm. The number of circles passing through points A,B,C is: 

Tank is normally filled in 8 hours but takes 2 hours longer to fill because of a leak in its bottom. If the cistern is full, in how many hours will the leak empty it? 

The ratio of the number of boys and girls in a college is 6 : 7. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?

The angle of elevation of the foot of a house from the top of a tower is twice the angle made with the top of this house. If the height of the tower is 75 meters. And the elevation angle of the foot of the house from the top of the tower is 60 degrees. So what is the height of the house?

If * means adding 6 times the second number to the first number then ( 1 * 2 ) *   3 equals : 

Directions: Given table shows the data of population in 5 different parks. Study the data carefully and answer the questions.

What is ratio of male population in park A & D together to female population in park B & E together?

If the difference between the two expenditures is represented by 180⁰ in the pie-chart, then these expenditures possibly are: