Question
A person is to reach a destination 40 km away. If he
covers the first 25 km in 4 hours then at what constant speed should he go so that the average speed for the whole journey becomes 8 km/hour?Solution
ATQ, 
Therefore, the person should maintain a constant speed of 15 km/hour for the remaining distance to achieve an average speed of 8 km/hour for the whole journey.
A cyclist was moving with a speed 20 km/hr. Behind the cyclist at a distance of 100 km was a biker moving in the same direction with a speed of 40km/hr....
Find the value of (25)ᶟ + (–29)ᶟ + (4)ᶟ
The Blind river dolphins are found in the water of:
Match List I with List II
Choose the correct answer f...
Which one of the following rivers flows in a rift river?
A, B, C, D and E are standing in row. 'A' is between 'B' and 'D'. E is not at the starting of row. 'C' is just before D. Study above statement and answe...
In the given figure ABCD is a rhombus, the value of x is.
Two numbers are in ratio of 7 : 10 and if the sum of the numbers is 119. Find the difference of the numbers.
The practice of erecting megaliths began about 3000 years ago, and was prevalent throughout the Deccan, South India, in the North-East and Kashmir. All ...
