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- Decimal Division With Rounding
- Word Problem With Division of a Decimal and a Whole Number
- Word Problem With Division of Two Decimals
- Word Problem With Multiple Decimal Operations: Problem Type 2
- Average of Two Numbers
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Average of Two Numbers Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Average of Two Numbers. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - If the average of two consecutive even numbers is 27, what are those numbers?
Answer : D
Explanation
Step 1:
Let the consecutive even numbers be n and n+2
Their average is (n + n + 2)/2 = (2n + 2)/2 = 27
(2n + 2) = 27 × 2 = 54
2n = 54 – 2 = 52; n = 52/2 =26
Step 2:
So the consecutive even numbers are 26 and 26 + 2 or 26 and 28
Q 2 - If the average of two consecutive natural numbers is 44.5, what are those numbers?
Answer : A
Explanation
Step 1:
Let the consecutive natural numbers be n and n+1
Their average is (n + n + 1)/2 = (2n + 1)/2 = 44.5
(2n + 1) = 44.5 × 2 = 89
2n = 89 – 1 = 88; n = 88/2 = 44
Step 2:
So the consecutive natural numbers are 44 and 44+1 or 44 and 45
Answer : C
Explanation
Step 1:
Cube of 3 = 33 = 27
Cube of 6 = 63 = 216
Step 2:
Average of cubes of 3 and 6 = (27 + 216)/2 = 243/2 = 121.5
Answer : B
Explanation
Step 1:
The average of 19 and q = (19 + q)/2 = 27
19 + q = 27 × 2 = 54
q = 54 – 19 = 35
Step 2:
So, q = 35
Answer : C
Explanation
Step 1:
The first two odd prime numbers are 3 and 5
Step 2:
Their average = (3 +5)/2 = 8/2 = 4
Answer : A
Explanation
Step 1:
The first and third multiples of 6 are 6 and 18
Step 2:
Their average = (6 + 18)/2 = 24/2 = 12
Answer : D
Explanation
Step 1:
The second and fourth multiples of 9 are 18, 36
Step 2:
Their average = (18 + 36)/2 = 54/2 = 27
Q 8 - If the average of two consecutive whole numbers is 29.5, what are the numbers?
Answer : B
Explanation
Step 1:
Let the consecutive natural numbers be n and n+1
Their average is (n + n + 1)/2 = (2n + 1)/2 = 29.5
(2n + 1) = 29.5 × 2 = 59
2n = 59 – 1 = 58; n = 58/2 = 29
Step 2:
So the consecutive natural numbers are 29 and 29+1 or 29 and 30
Answer : A
Explanation
Step 1:
The average of 28 and q = (28 + q)/2 = 21
28 + q = 21 × 2 = 42
q = 42 – 28 = 14
Step 2:
So, q = 14
Answer : B
Explanation
Step 1:
The average of 48 and p = (48 + p)/2 = 42.5
48 + p = 42.5 × 2 = 85
p = 85 – 48 = 37
Step 2:
So, p = 37