The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is: - Study24x7
Social learning Network
Topline Coaching
3613 followers study24x7 03 Oct 2020 12:08 PM study24x7 study24x7

The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is:

A

45%

B

50%

C

51.4% approx.

D

54.6% approx.

SSC Banking Railways
Like Comment Share
study24x7
Write a comment
Related Questions
500+   more Questions to answer

Popular Courses

Post Graduate Certificate in Invest... Beginners Level English By Investment Banking 590,000 625,000 6% off
Reasoning Special by Parwez Sir for... All Levels हिन्दी By Reasoning special by Parwez Alam
Average and Alligation for Bank PO ... All Levels हिन्दी By logicalangle
RRB NTPC Previous Year Papers with ... All Levels हिन्दी By Just Asking - Lets check your knowl...
SSC CGL, CPO, CHSL, GD Comprehensiv... All Levels English By Topline Coaching 3,999 5,499 27% off
English Special Course for SSC CGL,... All Levels English By Topline Coaching 999 1,499 33% off
RRB NTPC Mock Test Free 2020 in Hin... All Levels हिन्दी By Topline Coaching
Delhi Police Constable 2020 Live on... All Levels English By PARINAM COACHING CENTRE PVT LTD 1,499 2,499 40% off
BANKING AWARENESS PREMIUM COURSE All Levels English By RAU IAS COACHING 499 799 38% off
FREE MOCK TEST FOR SSC CGL All Levels English By SSC Preparation Strategies & Study ...
Featured Courses
Popular Pages

Featured Courses

Post Graduate Certificate in Investment Banking Beginners Level English By Investment Banking 590,000 0.0
BESTSELLER
Reasoning Special by Parwez Sir for all Government... All Levels हिन्दी By Reasoning special by Parwez Alam
FREE
5.0
IBPS PO (PRE) English Special by Pooja Mam All Levels English By Topline Coaching
FREE
5.0
RRB NTPC Previous Year Papers with keys - In Hindi All Levels हिन्दी By Just Asking - Lets check your knowledge
FREE
5.0
RRB JE Biology course All Levels English By Ashok Meena
FREE
4.5
BANKING AWARENESS PREMIUM COURSE All Levels English By RAU IAS COACHING 499 5.0
Math Special Course for SSC CGL, CPO, GD All Levels हिन्दी By Topline Coaching 999 5.0
Ratio,Proportion and Partnerships for Bank and SSC... All Levels हिन्दी By logicalangle
FREE
5.0
Government Jobs Exam Syllabus All Levels English By GOVERNMENT JOB NOTIFICATION
FREE
5.0
BESTSELLER
SSC CGL, CPO, CHSL, GD Comprehensive Course All Levels English By Topline Coaching 3,999 5.0

Popular Pages

Reasoning special by Parwez Alam

148 followers

SAT (Scholastic Assessment Test)

18 followers

Study24x7

1225 followers

Henry Harvin

61 followers

CBSE Study Materials

86 followers

RRB 2020-21 (Railway Jobs)

500 followers

Topline Coaching

3613 followers

SSC Preparation Strategies & Study Mater...

1543 followers

Banking/IRDA

265 followers

Vivishka Learning and Test Series

343 followers

Get the App

Download the Study24x7 App, so you can connect and collaborate.

study24x7
study24x7
Most Related Articles