Here are few Hard Average Methods shortcut tricks questions for your competitive exam preparations.
Example #1 – Hard Average Methods shortcut tricks
The average marks in Mathematics of 28 students is 58. If the marks of students were wrongly read as 36, 46, 57 of the existing marks 42, 59, 66 respectively, then find the correct average?
- 60
- 62
- 57
- 59
Show Answer Show How to Solve Open Rough Workspace
Answer: Option (D)
How to Solve
Present total marks of 28 students is ( 58 x 28 ) = 1624
Total marks with correct marks is ( 1624 + (( 42 + 59 + 66 )-( 36 + 46 + 57 )))
= 1624 + 28
= 1652
So, the new average marks will be ( 1652 / 28 ) = 59.
Present total marks of 28 students is ( 58 x 28 ) = 1624
Total marks with correct marks is ( 1624 + (( 42 + 59 + 66 )-( 36 + 46 + 57 )))
= 1624 + 28
= 1652
So, the new average marks will be ( 1652 / 28 ) = 59.
Rough Workspace
Few Examples of Average Shortcut Tricks
- 1. Average Methods Example 1
- 2. Average Methods Example 2
- 3. Average Methods Example 3
- 4. Average Methods Example 4
- 5. Average Methods Example 5
- 6. Average Methods Example 6
- << Go back to Average main page
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Explanation super
Give some more examples in this chapter
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can you give me clarity this example and I didn’t get
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Excellent! Sufficient for appearnig in exam.as far as Average sums are concerned. Thanks
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