A and B started a business in partnership investing Rs. 20,000 and Rs. 15,000 respectively. After six months, C joined them with Rs. 20,000. What will be B's share in total profit of Rs. 25,000 earned at the end of 2 years from the starting of the business?

The top of a 15 metre high tower makes an angle of elevation of 60° with the bottom of an electric pole and angle of elevation of 30° with the top of the pole. What is the height of electric pole ?

TF is a tower with F on the ground. The angle of elevation of T from A is x° such that tan x°= 2/5  and AF = 200 m. The angle of elevation of T from a nearer point B is y° with BF = 80 m. The value of y° is-

From the top of a tower, the angles of depression of two objects P and Q (situated on the ground on the same side of the tower) separated at a distance of 100(3−√3)
  m are 45° and 60 ° respectively. The height of the tower is-

From a lighthouse the angles of depression of two ships on opposite sides of the light house are observed to be 30° and 45°. If the height of the lighthouse is h metres, the distance between the ships is

If a 1.5 m tall girl stands at a distance of 3 m from a lamp-post and casts a shadow of length 4.5 m on the ground, then the height of the lamp-post is

The sum of the digits of a two-digit number is 15 and the difference between the digits is 3. What is the two-digit number? 

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is: 

A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by: 

In a two-digit, if it is known that its unit's digit exceeds its ten's digit by 2 and that the product of the given number and the sum of its digits is equal to 144, then the number is: