Averages and percentages

Maths

• Group 1 –> 10 – 18 Questions
• Group 2 –> 8-10 Questions

Average:

                          

Rule of allegation:

Avg2-CA : Avg1-CA = Total1 : Total2

Percentage:

Salary increases by I%, then decreases by D% –> final effect =

              

Salary increases by I1% and then by I2% –> final effect =

                  

Salary Decreases by D1% then D2% –> final effect =

                  

Value increases/decreases from V1 to V2 –> % increase/decrease =

                    

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