Teaching Exam > Teaching Questions > The average of five results is 46 and that of...
Start Learning for Free
The average of five results is 46 and that of the first four is 45, the fifth result is?
- a)10
- b)43
- c)50
- d)125
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
The average of five results is 46 and that of the first four is 45, th...
Most Upvoted Answer
The average of five results is 46 and that of the first four is 45, th...
The Problem
We are given that the average of five results is 46 and that the average of the first four results is 45. We need to determine the value of the fifth result.
Understanding Averages
Before we solve this problem, let's quickly review the concept of averages. The average of a set of numbers is found by adding up all the numbers in the set and dividing the sum by the total number of values.
For example, if we have the numbers 2, 4, 6, and 8, the average is calculated as follows:
(2 + 4 + 6 + 8) / 4 = 20 / 4 = 5
Solution
Let's assume the value of the fifth result is 'x'. We can set up the following equation based on the information given:
(45 * 4 + x) / 5 = 46
Step 1: Calculate the sum of the first four results
45 * 4 = 180
Step 2: Rewrite the equation with the sum and the unknown value
(180 + x) / 5 = 46
Step 3: Solve for x
To solve for x, we can multiply both sides of the equation by 5:
180 + x = 46 * 5
180 + x = 230
Next, we can subtract 180 from both sides of the equation:
x = 230 - 180
x = 50
Conclusion
Therefore, the value of the fifth result is 50, so the correct answer is option C.
We are given that the average of five results is 46 and that the average of the first four results is 45. We need to determine the value of the fifth result.
Understanding Averages
Before we solve this problem, let's quickly review the concept of averages. The average of a set of numbers is found by adding up all the numbers in the set and dividing the sum by the total number of values.
For example, if we have the numbers 2, 4, 6, and 8, the average is calculated as follows:
(2 + 4 + 6 + 8) / 4 = 20 / 4 = 5
Solution
Let's assume the value of the fifth result is 'x'. We can set up the following equation based on the information given:
(45 * 4 + x) / 5 = 46
Step 1: Calculate the sum of the first four results
45 * 4 = 180
Step 2: Rewrite the equation with the sum and the unknown value
(180 + x) / 5 = 46
Step 3: Solve for x
To solve for x, we can multiply both sides of the equation by 5:
180 + x = 46 * 5
180 + x = 230
Next, we can subtract 180 from both sides of the equation:
x = 230 - 180
x = 50
Conclusion
Therefore, the value of the fifth result is 50, so the correct answer is option C.
|
Explore Courses for Teaching exam
|
|
Similar Teaching Doubts
The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer?
Question Description
The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? for Teaching 2024 is part of Teaching preparation. The Question and answers have been prepared according to the Teaching exam syllabus. Information about The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Teaching 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer?.
The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? for Teaching 2024 is part of Teaching preparation. The Question and answers have been prepared according to the Teaching exam syllabus. Information about The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Teaching 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer?.
Solutions for The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Teaching.
Download more important topics, notes, lectures and mock test series for Teaching Exam by signing up for free.
Here you can find the meaning of The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer?, a detailed solution for The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The average of five results is 46 and that of the first four is 45, the fifth result is?a)10b)43c)50d)125Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Teaching tests.
|
|
Explore Courses for Teaching exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup