[Aptitude] Averages: More than two elements added / removed : shortcut technique explained

In Aptitude by Support Staff

In the previous article, we saw how to approach the concepts for “Averages-> Entry/removal of One element”. (click me) Now extending that concept for Entry/removal of multiple elements. Situation: Removing 2 Elements Case: highest score in (40/38) innings? (SSC CGL) Case: Highest marks in (10 / 8) papers (CAT-1997) Case: average price of (12/10) books (SSC CGL) Situation: More than …

[Aptitude] Averages: Entry / Removal of 1 element => Increase / Decrease in Average Shortcut method explained

In Aptitude by Support Staff

Situation: Entry of Element-Increase in Avg Case: Avg age of Students + Teacher Approach #1: convert into money problem Approach #2: Formula method Case: Avg salary workers+manager Case: Avg weight students+teachers Case: original average not given Situation: Entry of 1 element – Decrease in Avg Case: younger Kid joins: average goes down Case: Average Runs decline (original not given) Situation: …