9394949438

[LATEST]$type=sticky$show=home$rm=0$va=0$count=4$va=0

Average



INTRODUCTION
The Concept of averages is important. Some exams test the concept of average through direct questions the entrance exams have used the concept to set Conceptual problems that ordinarily will be difficult to be tackled.
For that while studying this chapter make sure to understand the faster illustrated computation in the text.
Average =
Average Increase =
Average Decrease =


SOLVED EXAMPLES
Example 1 Average of A, B, C & D = 45, Average of B, C, D & E = 68. If A = 100, Find E.
Solution: E = A + (Average of BCDE — Average of ABCD) x 4
E = 100 + (68 - 45) x 4
E = 100 + 23 x 4 = 192


Example 2 Average of A, B C & D = p Average of A & B = q, Average of C & D = ?
Solution: Average of CD = = 2p - q
Example 3 Average Salary of 24 persons decreases by Rs. 50 when one of them drawing Rs.12200 retires and replaced by a new man. What is the salary of the new comer?
Solution: Salary of the new corner = Rs. (12200 - 24 x 50) = Rs. 11000
Example 4 Average of A, B, C & D = 43, Average of C, D, E & F = 53, Average of A & B = 30, Average of E & F = ?
Solution: Average of EF =
Average of EF = = 50
Example 5 Average of A, B, C, D, E, F & G = , Average of A, B, C & D = 20. Average of E & F = 5, Find G.
Solution: G = x 7 – 20 x 4 - 5 x 2 = 10
Example 6 What is the average of first 37 odd numbers.
Solution: Sum of first n odd numbers is n2.Therefore, the average is n., Hence n = 37
Example 7 What is the average of first 38 even numbers.
Solution: Sum of first n even numbers is n(n +1)
Therefore, the average is n + 1, Hence, the average of first 38 even numbers is 39.
Example 8 Average of 0.1, x & 0.001 = 0,037, x = ?
Solution: x = 0.037 x 3 - 0.1 - 0.001 = 0.01
Example 9 Average of 20, 30 and x = 100, Average of 30, 40, x & y = 200, y = ?
Solution: x = 300 - (20 + 30) = 250
y = 800 – [30 + 40 + 250] = 480
Example 10 Average of ABCDE = 37, Average of BCDEF = 48, A : F = 2 : 13, A = ?
Solution: F - A = (48 - 37) x 5 = 55
A= 2 x 5 = 10
Example 11 Average of any 5 consecutive multiples of 28 is 56056. Find the smallest multiples out of those.
Solution: Smallest multiple of 28 = 56056 - 56
Smallest multiple of 28 = 56000
Example 12 A = 60, B = 60, C = 60, D is 60 more than average of A, B, C & D, then D = ?.
Solution: Let average of A, B, C & D be x
D = 60 + x
x =
4x = 240 + x
x = 80 D = 140
Example 13 A = 60, B = 60, C = 60, D is 30 less than average of A, B, C & D, D = ?
Solution: Let the average of A, B, C & D be x
D = x - 30
x =
4x = 150 + x
x = 50  D = 20
Example 14 Average of x, y & z = 100, (x - 20) ; (y + 80) = 2/3 , then z = ?
Solution: x + y + z = 300;   = 2/3 i.e., 3 (x - 20) = 2 (y + 80)
3x - 60 = 2y + 160
3x - 2y = 220; 2x + 2y + 2z = 600  , 5x + 2z = 820
2z = 820 - 5x
Z = …(i)
3x - 2y = 220  3x - 220 = 2y
= y …(ii)
x + y + z = 300
= 300  x = 120
2z = 820 - 600  z = 110


Example 15 In Section A, 20 Students average weight is 40 kg. In Section B, 60 Students average weight is 60 kg. In Section C, 20 Students average weight is 70 kg. What will be the average of all the 100 students.
Solution: Average of all 100 students is = = 58
Example 16 Average age of ABC 4 years ago was 13 years. D was born 9 years ago. What is the present average age of ABCD?
Solution: Average age of ABCD = = 15 years.
Example 17 Speed from A to B = 40 km/h, Speed from B to A = 60 km/h, Average speed = ?
Solution: Average speed = = 48 km/h
Example 18 Average of ABCD = 40, Average of BCDE = 100, E = 300, A = ?
Solution: B + C + D = 100
A = 40 x 4 - 100 = 60
Example 19 Find the average of first 100 natural numbers.
Solution: Average of first 100 natural numbers = = 50.5
Example 20 What is the increase in avg, if the 16th multiple of 26 is added to any 15 consecutive multiples of 26.
Solution: Increase in average = 26/2 = 13.



Want to Know More
Please fill in the details below:

INNER POST ADS

Name

admit-card,10,Allegation,1,Alphabetical Series,3,Anagrams,1,Analogies,3,Answer Key,4,answer-key,1,Average,1,best ctet coaching in delhi,1,Blood Relation,2,cbse ctet admit card,1,CDP,33,Child Development,39,Child Development Pedagogy,33,Child Pedagogy,39,Cistern,1,Clock Calendar,4,Cloze Test,7,Coding Decoding,3,Compound Interest,1,CTET,325,Ctet application,1,ctet application form,1,CTET Application Form 2018,1,ctet application form last date,1,CTET Coaching,3,ctet coaching centre delhi,1,ctet coaching in delhi,1,CTET Coaching in Dwarka,1,CTET Coaching in New Seemapuri,1,ctet coaching institute in delhi,1,Ctet eligibility,2,CTET Eligibility Criteria 2018,1,CTET Eligibility Criteria 2019,1,ctet exam admit card,1,ctet exam study material,1,ctet examination pattern,1,ctet hall ticket,1,CTET Preparation,1,ctet preparation books,1,ctet previous paper,1,ctet previous year solved paper,1,CTET Question Papers,1,CTET QUIZ,32,ctet study material,1,ctet study material for maths and science,2,ctet study material in english,1,ctet syllabus 2018,1,ctet syllabus 2019,1,CTET-2017,1,Cut Off,5,Data Interpretation,1,Development Process,1,Dice Test,1,Direction Sense Test,2,Distance,1,Download kvs Syllabus,2,DSSSB,187,DSSSB Admit card,1,dsssb admit card 2018,1,dsssb admit card download,1,DSSSB Coaching,6,dsssb eligibility criteria,1,DSSSB Exam,2,dsssb exam syllabus,1,dsssb pgt eligibility list,1,dsssb study material,1,dsssb study material pdf,1,DSSSB Teachers,5,dsssb teachers eligibility criteria,1,DSSSB Teachers Selection,1,Education,1,Educational Psychology,5,Eligibility,1,English,24,English Grammar,3,English Pedagogy,10,English-Pedagogy,19,Environment,1,EVS Pedagogy,12,EVS-Pedagogy,6,EXAM,1,Exams,3,Featured,8,Forgetting,1,General Science-Biology,1,Geometry,1,Grammar,2,Guest Teachers,1,Hall Ticket,1,Heights & Distance,1,Heredity,1,Hindi,3,how to prepare for ctet 2018,1,Idioms,3,Imp-Tips,4,Intelligence,1,job alerts,1,Jumbled Sentences,2,KVS,93,kvs dass exam date 2018,1,kvs exam pattern for pgt english,1,kvs latest updates,1,kvs online recruitment 2018,1,KVS syllabus,1,kvs syllabus 2019,1,kvs syllabus pgt hindi,1,kvs syllabus primary teacher,2,kvs teacher recruitment 2018,2,kvs tgt maths syllabus,1,kvs tgt pgt recruitment 2018,1,Latest Articles,150,Latest-Articles,1,Learning,1,Maths Pedagogy,10,Memory,1,Mensuration,1,Mixture,1,Mock test,33,MOCK TEST-DSSSB QUIZ,1,Motivation,1,NCF,104,Notification,21,Notifications,1,Number Puzzle,2,Number Series,3,Number System,1,Other Pedagogy,5,Partnership,1,Percentage,1,Permutation Combination,1,Personality,1,PGT,2,Pipes,1,Probability,1,Profit Loss,1,Progression,1,PRT,4,Psychology,2,Quant,17,Quant Notes,4,Quantitative Aptitude,17,Question Paper,1,Quiz,116,Ratio Proportion,1,Reasoning,30,Religious-Social,1,Results,8,Revision of the Day,15,Science Pedagogy,10,Seating Arrangement,3,Simple Interest,1,Speed,1,Spelling,3,SST Pedagogy,10,SST- Geography,12,SST-Civics and Economics,12,SST-History,27,study material for dsssb exam,1,Study Notes,79,Syllabus,18,Syllogism,2,Teachers Vacancies,2,TGT,1,Time,1,Vacancy,1,Venn Diagram,3,Verbal Ability,24,Vocabulary,3,Work,1,
ltr
item
Clear CTET - Coaching Institute for CTET, DSSSB and KVS: dsssb-quants-average-theory-part1
dsssb-quants-average-theory-part1
https://4.bp.blogspot.com/-L8FZAkc6Usk/XBC5sBG6bvI/AAAAAAAADBI/GLMQc-s2BeEVqJNbKoI7Oe72kO9_-52QQCLcBGAs/s1600/quants-average.jpg
https://4.bp.blogspot.com/-L8FZAkc6Usk/XBC5sBG6bvI/AAAAAAAADBI/GLMQc-s2BeEVqJNbKoI7Oe72kO9_-52QQCLcBGAs/s72-c/quants-average.jpg
Clear CTET - Coaching Institute for CTET, DSSSB and KVS
https://www.clearctet.com/2018/12/dsssb-quants-average-theory-part1.html
https://www.clearctet.com/
https://www.clearctet.com/
https://www.clearctet.com/2018/12/dsssb-quants-average-theory-part1.html
true
5140436504468951946
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy