The average age of 24 boys and their teacher is 15 years. When the teacher’s a

Question

The average age of 24 boys and their teacher is 15 years. When the teacher’s age is excluded, the average age decreases by 1 year. The age of the teacher is

Options:

A . 39 years

B . 38 years

C . 41 years

D . 40 years

Answer: Option A
Answer: (a)The age of the teacher = (24 + 1) × 15 – 24 × (15 – 1) = 25 × 15 – 24 × 14 = 375 – 336 = 39 years.

Was this answer helpful ?

Next Question

Submit Comment/FeedBack

More Questions on This Topic :

Question 1. The average age of 11 players of a cricket team is increased by 2 months when two of them aged 18 years and 20 years are....new players. The average age of the new players is

Question 2. 5 years ago, the average age of P and Q was 15 years. Average age of P, Q and R today is 20 years. How old will R be aft....20 years. How old will R be after 10 years?

Question 3. The average age of A and B is 20 years. If A is to be replaced by C, the average would be 19 years. The average age of C....of A, B and C in order (in years) are

Question 4. The average age of a husband and his wife was 23 years at the beginning of their marriage. After five years they have a ....the family of three, when the child was born, was

Question 5. In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only ....27 years. What is the age of the son ?

Question 6. The average age of 9 students and their teacher is 16 years. The average age of the first four students is 19 years and ....the last five is 10 years. The teacher’s age is

Question 7. In a family of 5 members, the average age at present is 33 years. The youngest member is 9 years old. The average age of....family just before the birth of the youngest member was

Question 8. In a school with 600 students, the average age of the boys is 12 years and that of the girls is 11 years. If the average....months, then the number of girls in the school is

Question 9. The average age of 8 men is increased by 2 years when two of them whose age are 21 and 23 years replaced by two new men.....men. The average age of the two new men is

Question 10. The average age of 45 persons is decreased by $1/9$ year when one of them of 60 years is replaced by a new comer. Then t....comer. Then the age of the new comer is :

Latest Videos

Chapter 1 - GLOBAL STEEL SCENARIO & INDI 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

Latest Test Papers

Chapter 3.1 : Overview of Finance & Acco 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 ov 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

Menu

Popular Courses

Search

Submit Comment/FeedBack

More Questions on This Topic :

Latest Videos

Latest Test Papers