A school has a total of 900 pupils 400 are boys the rest are girls. What's the ratio of boys to girls? .

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?