the average age of three boys is 15 years and their ages are in proportion 3:5

Sail E0 Webinar

Question

the average age of three boys is 15 years and their ages are in proportion 3:5:7. what is the age in years of the youngest boy?

Options:

A . 15

B . 9

C . 18

D . 21

Answer: Option B
Explanation :

Was this answer helpful ?

Next Question

Submit Solution

More Questions on This Topic :

Question 1. the average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. what was the 5th ob....the last 5 being 8. what was the 5th observation?

Question 2. the average of 10 numbers is calculated as 15. it is discovered later on that while calculating the average, one numbe....36 was wrongly read as 26. the correct average is?

Question 3. the average age of three boys is 15 years and their ages are in proportion 3:5:7. what is the age in years of the youn....what is the age in years of the youngest boy?

Question 4. the average of 10 numbers is calculated as 15. it is discovered later on that while calculating the average, one numbe....36 was wrongly read as 26. the correct average is?

Question 5. the average of first 10 prime numbers is?....

Question 6. the average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. if the sum of the first and the last number is 13. w....the last number is 13. what is the last numbers?

Question 7. the average of 10 numbers is calculated as 15. it is discovered later on that while calculating the average, one numbe....36 was wrongly read as 26. the correct average is?

Question 8. the average of first 10 prime numbers is?....

Question 9. the average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. if the sum of the first and the last number is 13. w....the last number is 13. what is the last numbers?

Question 10. the average age of three boys is 15 years and their ages are in proportion 3:5:7. what is the age in years of the youn....what is the age in years of the youngest boy?

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Chapter 3.1 : Overview of Finance & Accounts Department Chapter 3 : Finance & Accounts SAIL E0 - GFM 2024

Chapter 2.1 : Overview Chapter 2 : Materials Management SAIL E0 - GFM 2024

Chapter 1.1 : Personnel Functions- An overview Chapter 1 : Personnel Management SAIL E0 - GFM 2024

GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024

CBT Mixed Test 1 GPOE/GPA SAIL E0 2024