Quiz: Average

Avg of 1,2,3,4,5:

Avg of first 10 even numbers:

Avg age of 5 boys=15; new boy joins, avg=16. New boy's age:

Avg salary of 10 workers ₹4000; manager joins → ₹4500. Manager:

Avg of first 5 primes:

Avg weight 8 people increases by 2.5kg when one 65kg replaced. New person:

Average of 30 nos is 40; if 2 of them (60,70) removed, new avg:

Avg of 6 nos is 25; sum of 5 is 100. Sixth =

Avg age of family of 5 is 20; child born → avg drops to 17.5 five years later. Child's age now:

Avg score of a batsman in 25 innings = 45; 26th innings = 71 → new avg: