Question
The average age of 10 men is increased by 2 years when
two of them whose age are 24 and 26 years replaced by two new men. The average age of the two new men is?Solution
Let the sum of age of 10 men = 10x And the age of two new men = y yrs According to the question, 10x - 24 -26 + y = 10(x+2) 10x - 50 + y = 10x + 20 y = 70 Average age of New men = y/2 = 70/2 = 35 years Alternate method: Sum of ages of two new persons = sum of ages of two persons repaled + change in average ×number of persons = 26+24+2×10 = 50 + 2×10 =50+20 = 70 So average of ages of new persons = 70/2 = 35 years
What technology is utilized by FASTag to facilitate automatic toll payments?
Which of the following cube in the answer figure CANNOT be made based on the unfolded cube in the question figure?
The first Chairman of Finance commission was
Which statement among the following is incorrect regarding the geographical description of Uttarakhand?
RBI Banking Ombudsman Office for Centralised Receipt and Processing Centre is located in ____________.
Who is the author of the book The Golden House?
Consider the following statements:
1. The design of the National Flag was adopted by the Constituent Assembly of India on 22 July 1947.
2....
When is International Labour Day observed?
ऊंट की खाल पर चित्रांकन किस कला शैली की विषेषता है?
Recently Supreme Court approved establishment of some special courts to prosecute criminal cases against legislators within a year. The number of courts...
Relevant for Exams:
