Question
If a person walks 25% more than of his usual speed,
reaches his distance 90 minutes before. If the destination is 420 km away, then the usual speed of a person is (in km/hr)?Solution
Let the usual speed be x km/hr New speed = 125% of x = 5x/4 km/hr Distance = 420 km According to the question 420/x – 420/(5x/4) = 90/60 420 x [(5 – 4)/5x] = 3/2 Therefore, x = 420 x (1/5) x (2/3) = 56 km/hr
Where is the 'Ninety East Ridge' located?
Which strait separates Australia from Tasmania?
Consider the given statements:
(I) The standard meridian of India is 82°30'E.
(II) The five states in India through which the Indian Stan...
Which of the following is the longest river in the world.
Which is the highest peak in Andaman and Nicobar Islands?
Which of the following is the smallest continent by land area?
Which of the following statements about rainfall in India is/are correct?
1. Most of the rainfall in India is due to the South-West monsoon
...Arrange the following North-Eastern hills in order starting from North to South:
1. Lushai Hills
2. Manipur Hills
3. Patkai ...
Which one of the following longitudes determines the Indian standard time?
The Khyber Pass is located in which country?
Relevant for Exams:
