Question

Average of 5 consecutive odd numbers is 57 so find the sum of next 5 consecutive odd number

Answer 1

let 2n-1 be 1st odd then

ATQ
{(2n+1)+(2n+3)+(2n+5)+(2n+7)+(2n+9)}/5= 57

or 10n=57*5-25
n=26

hence next 5 consecutive odd no. are
2*26+11=63;
65,
67
69
71.

sum=63+65+67+69+71= 335