CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Tags:

Articles

Discussions
Submit Discussion
Artika Jain

· started a discussion

· 1 Months ago

logic (Question:125400.0)

any short cut ?

Question:
The average age of 40 students of a class is 18 years. When 20 new students are admitted to the same class, the average age of the students of the class is increased by 6 months. The average age of newly admitted students is:
Options:
A) 19 years
B) 19 years 6 months
C) 20 years
D) 20 years 6 months
E) None of these
Solution:
Ans: (b) Total age of 40 students = 40 × 18 = 720 years.

Total age of 60 students after new came = 60 × 18.5 years = 1110 years.

Total age of 20 new students = 1110 - 720 = 390 years.

Average age of 20 students = \(\cfrac{390}{20}\) = 19.5 years.

Knowledge Expert

· commented

· 1 Months ago

Total age of 40 students = 40 × 18 = 720 years. Total age of 60 students after new admitted = 60 × 18.5 years = 1110 years. Total age of 20 new students = 1110 - 720 = 390 years. Average age of 20 students = 390/20 = 19.5 years.

Anoop Joshi

· commented

· 1 Months ago

Yet to be approved!
-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