# Average Questions & Answers with Solutions

Average Problems- Aptitude, questions and Answers Mock test. Welcome to freeonlinetest online exam portal, here you will get 20+ Average questions with Answers.

Before proceeding test please read the tricks carefully, so that you can solve these questions easily.

## Average Questions & Answers with Solutions

Question-1)

The average of 15 numbers is 7. If the average of the first 8 numbers is 6.5 and the average of the last 8 numbers is 8.5, then the middle number is

Middle i.e. eighth number

= 8 × 6.5 + 8 × 8.5 – 15 × 7

= 52 + 68 – 105

= 120 – 105 = 15

Question-2)

The average of 11 results is 50. If the average of the first six results is 49 and that of the last six is 52, the sixth no. is

Average of two or more numbers/quantities is called the mean of these numbers, which is given by

$\text"Average(A)" = \text"Sum of observation / quantities"/\text"No of observation / quantities"$

∴ S = A × n

Sixth result

= 6 × 49 + 6 × 52 – 11 × 50

= 294 + 312 – 550 = 56

Question-3)

The average of 8 numbers is 21. If each of the numbers is mulitiplied by 8, the average of the new set of numbers will be

When each number is multiplied by 8, the new average gets multiplied by 8. i.e., 21 × 8 = 168

Question-4)

The average of the largest and smallest 3 digit numbers formed by 0, 2 and 4 would be

Largest 3–digit number formed by 0, 2 and 4 = 420 Smallest number of three digits = 204

∴ Required average

= ${420+204}/2$ = $624/2$ = 312

Question-5)

What is the average of first five multiples of 12?

Average = 12×(1+2+3+4+5) × $1/5$

= 12 ×15 × $1/5$

= 12 × 3= 36

### Test instructions :

• Total number of questions : 20
• Each question carries 1 mark
• Negative marks of Each Questions: 0.25
• Skiping questions No marks will deduct.
• Time allotted : 30 minutes