Question : Directions: The mean weight of 8 students is 57 kg. The weight of each student is 55 kg, 49 kg, 57 kg, 63 kg, 68 kg, 52 kg, X kg, and Y kg. What is the sum of X and Y?
Option 1: 116 kg
Option 2: 112 kg
Option 3: 110 kg
Option 4: 114 kg
New: SSC Stenographer Application Form 2024 Released
Don't Miss: Month-wise current affairs
Suggested: Upcoming government exams
Correct Answer: 112 kg
Solution :
Given:
The mean weight of 8 students = 57 kg
⇒The sum of the weight of 8 students = Mean weight of 8 students × number of students = 57 × 8 = 456
⇒The sum of weight of each student = (55 + 49 + 57 + 63 + 68 + 52 + X + Y)kg
⇒55 + 49 + 57 + 63 + 68 + 52 + X + Y = 456
344 + X + Y = 456
X + Y = 456 – 344
X + Y = 112
So, the sum of X and Y is 112 kg. Hence, the second option is correct.
Related Questions
Know More about
Staff Selection Commission Stenographer ...
Application | Eligibility | Dates | FAQs
Get Updates Brochure
Your Staff Selection Commission Stenographer Grade C & D Exam brochure has been successfully mailed to your registered email id “”.
