18 Views

Question : The average age of Ram and Rahim is 10 years. The average age of Rahim and Ramesh is 15 years. The average age of Ram and Ramesh is 20 years. What is the age of the eldest of the three?

Option 1: 25 years

Option 2: 10 years

Option 3: 30 years

Option 4: 15 years


Team Careers360 23rd Jan, 2024
Answer (1)
Team Careers360 25th Jan, 2024

Correct Answer: 25 years


Solution : The average age of Ram and Rahim is 10 years. The average age of Rahim and Ramesh is 15 years. The average age of Ram and Ramesh is 20 years.
Total age of Ram and Rahim = (10 × 2) = 20 years
Total age of Rahim and Ramesh = (15 × 2) = 30 years
Total age of Ram and Ramesh = (20 × 2) = 40 years
Total age of Ram, Rahim and Ramesh = $\frac{20+30+40}{2}$ = 45 years
So, the age of Ram = (45 – 30) = 15 years,
The age of Rahim = (45 – 40) = 5 years,
and the age of Ramesh = (45 – 20) = 25 years
Therefore, the age of the eldest of the three = 25 years
Hence, the correct answer is 25 years.

Know More About

Related Questions

TOEFL ® Registrations 2024
Apply
Accepted by more than 11,000 universities in over 150 countries worldwide
Manipal Online M.Com Admissions
Apply
Apply for Online M.Com from Manipal University
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books