Question
A vendor has 2700 kg of tea. He sells a portion at 30%
profit and the remaining at 20% profit. The overall profit made is 25%. Find the amount (in kg) of tea sold at 20% profit.Solution
Let the quantity of tea sold at 30% profit be m kg.
Then, the quantity sold at 20% profit = 2700 - m kg.
Thus, the quantity of tea sold at 20% profit = 2700 - 1350 = 1350 kg.
A body moves with uniform acceleration and covers 80 m in 4 s and 160 m in next 4 s. Find initial velocity.
In a diatomic gas at ordinary temperatures, how many degrees of freedom contribute to internal energy?
A circular coil of wire consisting of 120 turns, each of radius 12 cm carries a current of 0.30 A. What is the magnitude of the magnetic field B at the ...
Charges +q and –q are placed at (–d, 0) and (+d, 0). A third charge Q is placed at (0, x). For what value of x will the force on Q be maximum?
Specific resistance of a conductor increases with :
Ratio of intensities of two waves with amplitudes 2 and 3 is:
Which instrument is used to measure the moisture content in the air?
A coil takes 4 A from a 12 V DC source. When connected to a 12 V, 50 rad/s AC source, the current is 2.4 A. The inductance of the coil is:
A new technology which provides the ability to create an artificial world and have people interact with it is called –
As we go from Equator to North pole the value of ‘S; the acceleration due to gravity