Question : The average of three consecutive even numbers is A. If the next five even numbers are added, what is the average of these eight numbers?
Option 1: A + 3
Option 2: A + 4
Option 3: A + 5
Option 4: A + 7
Latest: SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL complete guide
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: A + 5
Solution : Let $(x - 2)$, $x$, and $(x + 2)$ be the three consecutive even numbers. Average = A = middle term = $x$ Let the next five consecutive even numbers added be $(x + 4), (x + 6), (x + 8), (x + 10)$ and $(x + 12)$ Then numbers are $(x - 2)$, $x$, $(x + 2)$, $(x + 4), (x + 6), (x + 8), (x + 10),$ and $(x + 12)$. $\therefore$ Average = Average of two middle terms =$ \frac{(x + 4)+ (x + 6)}{2} =x+5 =A+5$ Hence, the correct answer is A + 5.
Candidates can download this ebook to know all about SSC CGL.
Admit Card | Eligibility | Application | Selection Process | Preparation Tips | Result | Answer Key
Question : The sum of three consecutive even numbers is 28 more than the average of these three numbers. Then the smallest of these three numbers is:
Question : The average of two numbers is 8, and the average of the other three numbers is 3. The average of the five numbers is:
Question : The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7 is:
Question : The average of eight consecutive odd numbers is 48. Find the sum of the fifth and seventh numbers.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile