Question
A person purchased an article for Rs. 2500 which was
marked up by 30% above its cost price. The discount given by seller to person was Rs. 100. By how much more price, should the seller have sold to gain 40%?Solution
Marked price of the article = 2500 + 100 = Rs. 2600 Cost price of the article= 2600/1.30 = Rs. 2000 Required selling price = 1.4 times; 2000 = Rs. 2800 Required amount = 2800 ndash; 2500 = Rs. 300
A stone thrown upward with a speed ’u’ from the top of the tower reaches the ground with a speed ‘3u’. The height of the tower is-
Hyperrnetropia or longsight can be corrected by using :
Self-inductance of a long solenoid is directly proportional to:
What is the electrical charge of a neutrino?
What is the wavelength of visible spectrum?
A body is thrown vertically upward. The work done by gravity is:
A galvanometer coil has a resistance of 14 Ω and the metre shows full scale deflection for a current of 4 mA. How will you convert the metre into a vo...
The Mohs scale is used to measure:
An object is placed at a distance of 10 cm in front of a double convex lens made of glass of refractive index 1.5. Both the radii of curvature of the le...
What is the value of 1 horsepower in watts?