Question : The average age of 5 children is 10 years. If two more children of ages 11 years and 16 years join, then what will be the new average age?
Option 1: 11 years
Option 2: 10 years
Option 3: 13 years
Option 4: 12 years
New: SSC MTS Tier 1 Answer key 2024 out
Don't Miss: Month-wise Current Affairs | Upcoming Government Exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 11 years
Solution : The average age of 5 children = 10 years Sum of the ages of 5 children = 10 × 5 = 50 Age of first new child = 11 years Age of second new child = 16 years Total ages of 7 children = 50 + 11 + 16 = 77 years So, the required average = $\frac{\text{Sum of the ages of 7 children}}{\text{Total children}}$ = $\frac{77}{7}$ = 11 years Hence, the correct answer is 11 years.
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
Question : The average age of 15 members of a committee is increased by 4 years when two members whose ages are 60 years and 70 years are replaced by two new members. What is the average age of the new members?
Option 1: 105 years
Option 2: 80 years
Option 3: 85 years
Option 4: 95 years
Question : The marks obtained by 5 children in a test are as follows: 12, 14, 8, 10, and 16. What are the average marks obtained by these 5 children?
Option 1: 11
Option 2: 14
Option 3: 10
Option 4: 12
Question : The average age of eight girls is y years. 5 new girls having ages (in years) given by y + 3, y – 6, y + 15, y + 8, and y + 6 join the class. What is the new average age of the class?
Option 1: (y + 2) years
Option 2: (y + 6) years
Option 3: (y + 3) years
Option 4: (y + 1) years
Question : The ratio of present ages of Neelam and Rajni is 6 : 5. After six years, their ages will be in the ratio of 13 : 11. What is the present age of Rajni?
Option 1: 45 years
Option 2: 75 years
Option 3: 30 years
Option 4: 60 years
Question : The ratio of the ages of the two students is 5 : 4. The difference between their ages is 8 years. What is the age of the younger student?
Option 1: 24 years
Option 2: 32 years
Option 3: 40 years
Option 4: 48 years
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile