In the above example, if the average weight is decreased by 1kg , then find the weight of new person.
in Mathematics
32 views
3 Votes
3 Votes

In the above example, if the average weight is decreased by 1Kg , then find the weight of new person. 

in Mathematics
by
7.2k Points

1 Answer

3 Votes
3 Votes
 
Best Answer

Solution —

Let the average weight of a group = x
∴ Total weight of 30 persons =30x 

Let the weight of new person = y
        ∴From the quetions, 

30x - 40 + y = 30(x - 1)

⇒ 30x - 40 + y = 30x - 30

⇒ y = 40-30 

∴ y = 10 kg

Hence, The age of new person is 10kg

by
7.2k Points

Related Questions

Welcome To Informesia

Informesia Helps You To Prepare India's All States Board Exams (CBSE, ICSE, UP Board, BSEB, HPBOSE, RBSE, MSBSHSE) and Competitive Exam Like JEE (Main + Advanced), AIIMS, NEET, KVPY, NTSE, BITSAT, Olympiad, CLAT...etc.
For Any Query or Suggestion, Please Contact us on :
[email protected]

Connect us on Social Media