Pipe A can fill a tank in 10 hours and Pipe B can fill the same tank in 12 hours. Both the pipes are opened to fill the tank and after 3 hours Pipe A is closed. Pipe B will fill the remaining part of the tank in:

Two straight poles of unequal length stand upright on a ground. The length of the shorter pole is 10 metres. A pole joins the top of the two vertical poles. The distance between the two tops is 5 metres. The distance between the poles along the ground is 4 metres. The area thus,…

A ground 100 x 80 m² has two cross roads in its middle. The road parallel to the length is 5 metre wide and the other road is 4 metre wide, both roads are perpendicular to each other. The cost of laying the bricks at the rate of Rs. 10 per m², on the roads, will be:

A rod of 2 cm diameter and 30 cm length is converted into a wire of 3 metres length of uniform thickness. The diameter of the wire is:

If selling price of 10 articles is equal to cost price of 11 articles, then gain is:

Sum of first 15 multiples of 8 is:

Angles of a quadrilateral are in the ratio 3: 4: 5: 8. The smallest angle is:

If a point (x, y) in a OXY plane is equidistant from (-1, 1) and (4, 3) then:

The population of a city is 250 thousand. It is increasing at the rate of 2% every year. The growth in the population after 2 years is: