Hard Average Methods shortcut tricks


Hard Average Methods shortcut tricks

Example #1
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?

Show Answer

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.


 

Few Examples of Average Shortcut Tricks

 

We provide few tricks on Average. Please visit this page to get updates on more Math Shortcut Tricks. You can also like our facebook page to get updates.

If You Have any question regarding this topic then please do comment on below section. You can also send us message on facebook.

5 comments

Leave a Reply