Question

The average of 7 consecutive odd number is n. If next 2 number also included, then what will be the new average​

Answer 1

Answer:

Let the first odd number is x. Then the seven consecutive odd numbers will be

x, x+2, x+4, x+6, x+8, x+10, x+12 whose sum is

7x + 42 and the average will be (7x+42)/7 = 7(x+6)/7 = x+ 6 which is given to be M. So x= M-6

the next 3 odd numbers would be

x+14, x+16, x+18 whose sum is 3x+48

The sum of 10 numbers is (7x +42)+(3x+48)

= 10x + 90. So the new average is 10(x+9)/10 = x+9

on substituting x = M-6 in new average, we get

M-6+9 = M+3

The new average is M+3

HOPE YOU WILL UNDERSTAND IT.

Answer 2

Answer:

the answer is 7

Step-by-step explanation:

the 7 consecutive + next 2 number/2