In a race of 1 km , A gives B a start of 100 m and still wins by 20 sec . But if A gives B a start of 25 sec , B wins by 50 m . The time taken by A to run 1 km is(in seconds)
The base of a right prism is an equilateral triangle. If the lateral surface are and volume is 120 cm^2, 40root 3 cm^2 res. then the side of base of the prism is
A sum of money lent at compound interest for 2 years at 20% pa would fetch rs. 482 more, if the interest was payable half yearly than if if it was payable annually. the sum is
A conical cup is fulled with ice cream. The ice cream forms a hemispherical shape on its open top. The height of the hemispherical part is 7cm. The radius of the hemispherical part equals the height of the cone. Then the volume of the ice cream is
A man borrows 4000 at 20% compound interest. At the end of each year he pays back 1500. How much amount should he pay back at the end of 3rd year to clear all his dues?
Aand B are centers of two circles whose radii are 5cm and 2 cm rsply. The direct common tangent to the centres meet AB extended at P. The P devides AB?