The population of a town is 760. It increases2% in the first year and then again increases 3.5% in the second year. What will be the approximate population aftertwo years ?

Ina classroom there are 60 students. The average age of girls is 7 years and that of boys is 11.5 years. The average age of the entire class is 10 years. If 5 boys leave the class what will be ratio of the number of boys to that of girls in the class.

The angle of elevation ofthe top ofthe tower from Point A is 45°. On moving 20 metres, towards the tower, the elevation angle becomes 60°. What is the approximate height ofthe tower ?