Question

The average of 5 consecutive numbers is 7. What is the highest number?

Answer 1

Answer:

Let the first number be = x

Other numbers = x + 1, x + 2, x + 3, x + 4

Average :

$\tt {\frac {x+x+1+x+2+x+3+x+4}{5} = 7}$

=》 5x + 10 = 35

=> x = 5

Highest number = x + 4 = 5 + 4 = 9