CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Tags:

Articles

Discussions
Submit Discussion
arul mani

· started a discussion

· 1 Months ago

ages (Question:121816.0)

explanation not clear. please provide the detailed solution

Question:
A says to B “I am twice as old as you were when I was as old as you are”. The sum of their ages is 63 years. Find the difference of their ages.
Options:
A) 27 years
B) 21 years
C) 9 years
D) 6 years
E) None of these
Solution:

Ans:(c)                            A              B

Present age                       2x             y

Some years before            y               x

Here, 2x – y = y – x

2x + x = y + y

3x = 2y

x/y = 2/3

A : B

2x y

2 × 2 3

Present age 4 : 3

Now, the required difference in ages = \(\cfrac{63 \times (4-3)}{(4+3)}\)    = 9 years


-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