Question
5 positive numbers are written on a piece of paper. Sum
of first 3 numbers is 30 and ratio of the 4th and the 5th number is 2:3. If difference between the 4th and the 5th number is 16, then find the average of all the numbers.Solution
Given, 4th number:5th number = 2:3 Let, 4th number = 2x 5th number = 3x So, 3x – 2x = 16 Or, x = 16 Required average = {(30 + 16 × 2 + 16 × 3)/5} = (110/5) = 22
Study of Science of rocks which form the unit of earth crust is known as ?
Consider the following pairs:
Which of the pairs give...
Which is the southernmost range of the Himalayas?
If you travel by road from Kohima to Kottayam, what is the minimum number of States within India through which you can travel, including the origin and ...
Which one of the following pairs of States of India indicates the easternmost and westernmost State
The World Deepest trench ‘Mariana Trench’ is found in
Which rivers demarcate the boundaries of Kangchenjunga?
Why do the Western Ghats receive more rainfall than the Deccan Plateau?
Rani Jhansi Marine National Park’ (RJMNP) is situated in _____________.
Consider the following statements:
1. The snowline in western Himalayas is at a higher altitude than the eastern Himalayas.
2. The average...