the average age of all the students of a class is 15 years. the average age of

Question

the average age of all the students of a class is 15 years. the average age of the boys of the class is 18 years, and that of the girls is 12 years. if the number of girls in the class is 21, then wha

Options:

A . 20

B . 21

C . 22

D . 23

Answer: Option B
Explanation :

Was this answer helpful ?

Next Question

Submit Comment/FeedBack

More Questions on This Topic :

Question 1. what is the average salary of a, b and c ? i. a and b get equal salary and c's salary is half of a's. ii. c's salary i....a's. ii. c's salary is rs 500 less than b's.

Question 2. the average age of all the students of a class is 15 years. the average age of the boys of the class is 18 years, and ....number of girls in the class is 21, then wha

Question 3. what is average speed of a man ? i. he walks at 5 kmh-1 from place a to b and returns back at 4 kmh-1 ii. the distance....ii. the distance between a and b is 10 km.

Question 4. in a class the average age of 25 students is 12 years. when five students left the class the average age became 11 yea....average age of the students who left the class ?

Question 5. what is the average salary of a, b and c ? i. a and b get equal salary and c's salary is half of a's. ii. c's salary i....a's. ii. c's salary is rs 500 less than b's.

Question 6. the average age of a class of 32 students is 16 yrs. if the teacher's age is also included, the average increases by o....increases by one year. find the age of the teacher

Question 7. average of five consecutive even numbers is 35. find the greatest number in these five numbers?....

Question 8. in a class, the average age of 30 boys is 13 years and the average of 20 girls is 12 years. what is the average age of....years. what is the average age of the whole class?

Question 9. average of 13 results is 65. if the average of first six results is 61 and average of last six results is 59 then find....last six results is 59 then find the seventh result?

Question 10. the average of seven numbers is 18. the average of first three numbers is 14 and the average of last three numbers is ....last three numbers is 19. what is the middle number?

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