Question

ali is 14 years 9 months and 11 days hussain is 14 years 7 months and 29 days and muqeez age is 7 years and 9 month 6 days find average of all?​

Answer 1

Answer:

Age of new entrant = New average + No. of old members x change in average

2 . Age of one who left = New average - No. of old members x change in average

3 . Age of new person = Age of the removed person + No. of members x change in average In all the above three cases, if there is a decrease in the average, the sign of change in average will be negative.

4 . If a certain distance is covered at x km/hr and the same distance is covered by y km/hr, then the average speed during the whole journey is

Average formula2