LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
17 views
in Aptitude by (30.0k points)
closed by
Average of 5 numbers is 66.4. The average of first 2 numbers is 67 and average of last 2 numbers is 75. Find the middle number. 
1. 48
2. 75
3. 40
4. 62
5. 50

1 Answer

0 votes
by (54.3k points)
selected by
 
Best answer
Correct Answer - Option 1 : 48

Given:

Average of 5 number = 66.4

Average of the first 2 numbers = 67

Average of last 2 numbers = 75

Formula used:

Average = Sum of numbers/Number of units

Calculation:

Sum of all 5 numbers = 66.4 × 5 = 332

Sum of first 2 numbers = 2 × 67 = 134

Sum of last 2 numbers = 2 × 75 = 150

Middle number = 332 – (134 + 150)

⇒ 332 – 284

⇒ 48

∴ The middle number is 48

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...