Question
Average of 20 numbers is 90. Average of first 8 numbers
is 114 while average of last nine numbers is 40. If ninth number is 25% less than the tenth number which is equal to the eleventh numbers then find the tenth number.Solution
Sum of ninth, tenth and eleventh number = 20 × 90 – 8 × 114 – 9 × 40 = 528 Let tenth number = x = eleventh number So, ninth number = 0.75 × x = 0.75x So, x + 0.75x + x = 528 Or, 2.75x = 528 Or, x = 192
Under the Constitution of India, the safety, welfare and health of workers employed in mines are the concern of ___.
Assertion (A): In the organizational structure of the modern companies, the trend is towards wider span of control.
Reason (R): Narrow span of ...
Consider the following statements:
(1) Article 21 talks about the protection of life and personal liberty.
(2) Article 21 is a part of t...
Consider the following statements :
1. Falkland Islands are situated in Pacific Ocean.
2. Red Sea separates Sudan from Egypt.
Out of the given words, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is different fro...
A convex mirror used as a rear-view mirror of a car has a focal length of 2 m. If a bus is located at a distance of 3 m from the mirror, where will its ...
Which one of the following concerns prepares Receipts and Payments Account?
Which of the following statements are correct regarding “Mid-day meal scheme”?
I. It is implemented by “The Minist...
After which constitutional amendment the Santali Language was added in the 8th Schedule as official language?
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Which numbers should repla...
