CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
Ravi Swami

· started a discussion

· 1 Months ago

Solution (Question:351284.0)

Complete solution

Question:

A club consists of members whose ages are in AP, the common difference being 3 months. If the youngest member of the club is just 7 years old and the sum of the ages of all the members is 250 yrs, then the number of members in the club are:

Options:
A)

15

B)

20

C)

25

D)

30

Solution:

Ans: (c)


Knowledge Expert

· commented

· 1 Months ago

Dear Student,

hear after put their respective values in formula of sum of an AP series.
250= 7n+n^2/8- n/8
250*8= 56n+ n^2-n
2000= 55n+n^2
n^2+55n-2000=0
by factorization-
n^2+80n-25n-2000=0
n(n+80)-25(n+80)=0
n+80=0
n= -80 neglect the negative value
n-25=0
n=25

Keep learning keep solving
Best wishes
Team Topankers

Vikram Singh

· 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