CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
suman kumari meena

· started a discussion

· 1 Months ago

sol??? (Question: 382337.0 )

short trick provide

Question:

In a school, there are total of 50 students in class X, who are divided in three sections A, B and C. Section A and B have equal no. of students. All the students of the class wrote a test. The average marks obtained by the section A and B together is 52.5. The average marks obtained by A and C together is 60. The average marks obtained by B and C together is 70. The average marks obtained by section A, B and C together is 60. How many students are there in section C –

Options:
A)

10

B)

15

C)

20

D)

can't be determined

Solution:

Ans: (a)

  

rituraj singh

· commented

· 1 Months ago

Yet to be approved!

Avnish Kaushal

· commented

· 1 Months ago

Yet to be approved!

Nishant Kumar

· commented

· 1 Months ago

let no of student in class A = x and class B = x and classC = y
2x+y=50 and105x +70x+70y+60x+60y= 6000
by solving for y we get y=10
-logo
We at aim to provide most comprehensive content & test for practice which is carefully divided into various chapters and topics to help you focus on your weak areas.Our Practice mock test gives you unmatched analytics to help you realize your strong areas,time management and improvement areas.Our Short & Crisp notes on each topic will help you to quickly revise the topic along with the tips & tricks of the exams.
More About
-Info
-Info

Mobile App

Get it on Google Play
About Us Campus Ambassador Careers Contact Us Refund Policy

All Rights Reserved Top Rankers

User Policy
Disclaimer
Terms & Conditions