Question
A microwave oven was sold for Rs. 15,750 at a profit of
25%. If the microwave oven was instead sold at a loss of 9%, what would have been its selling price?Solution
ATQ, Let the cost price of the microwave oven = Rs. '100y' Then, selling price when sold at 25% profit = 100y × 1.25 = Rs. '125y' So, 125y = 15750 So, selling price when sold at a loss of 9% = 100y × 0.91 = Rs. '91y' Or, 91y = 15750 × (91/125) = Rs. 11,466 Alternate solution: Required selling price = 15750 × (91/125) = Rs. 11,466
What is the principle behind the working of a transformer?
Which of the following waves require a medium to travel?
A body of mass 3 kg has a velocity of 4 m/s. Find its kinetic energy.
Which instrument is primarily used to measure the relative density of liquids by utilizing the principle of buoyancy?
The balance point in a potentiometer for a cell of emf 1.5 V is 60 cm. If a resistance of 5 Ω is connected in parallel with the cell and the new balanc...
A particle of mass m is placed in a potential V(x) = ax² + bx⁴. For small oscillations around equilibrium, its time period is:
From the given options, the speed of sound is highest in which material?
Parsec is the unit of
A cylindrical conductor of length L and radius R has its radius increasing linearly from R at one end to 2R at the other. A constant current I flows thr...
A body is projected upwards with an initial velocity u . At the highest point, what is its acceleration?