Question : The average of 4 consecutive numbers is 64.5. What is the largest number among these numbers?
Option 1: 62
Option 2: 60
Option 3: 67
Option 4: 66
Correct Answer: 66
Solution :
Given: The average of 4 consecutive numbers is 64.5.
Let the 4 numbers be $x$, $x+1$, $x+2$ and $x+3$, respectively.
The sum of the 4 numbers $=x+x+1+x+2+x+3=4x+6$
Use the formula, $\text{Average}=\frac{\text{Sum of all values}}{\text{Total number of values}}$
According to the question,
$\frac{4x+6}{4}=64.5$
⇒ $\frac{4x+6}{4}=64.5$
⇒ $4x+6=258$
⇒ $4x=252$
⇒ $x=63$
The largest number among these numbers = 63 + 3 = 66
Hence, the correct answer is 66.
Related Questions
Know More about
Staff Selection Commission Multi Tasking ...
Answer Key | Cutoff | Selection Process | Preparation Tips | Eligibility | Application | Exam Pattern
Get Updates Brochure
Your Staff Selection Commission Multi Tasking Staff Exam brochure has been successfully mailed to your registered email id “”.
Upcoming Exams
Trending Articles around SSC MTS
