Question
If a person walks 20% more than of his usual speed,
reaches his distance 90 minutes before. If the destination is 459 km away, then the usual speed of a person is (in km/hr)?Solution
Let the usual speed be x km/hr New speed = 120% of x = 6x/5 km/hr Distance = 459 km According to the question 459/x – 459/(6x/5) = 90/60 459 x [(6 – 5)/6x] = 3/2 Therefore, x = 459 x (1/6) x (2/3) = 51 km/hr
Rifting typically occurs at which type of tectonic boundary?
Identify the gas that is not considered a permanent part of the Earth's atmosphere.
What process is primarily used to convert seawater into drinkable water?
Lecanemab drug is associated with which disease?Â
The ratio of sine of the angle of incidence to the sine of the angle of refraction is a constant for a given colour and for the given pair of media. Whi...
Where did the infamous Black Hole Tragedy occur?
The number of ______ is equal to the difference between the mass number of the atom and the atomic number.
Which gland in the human body is also known as the "third eye"?
What was the main goal of the MoU signed between ARIES and IRDE in May 2025?
At what angle is a pendulum's equilibrium position defined?