Question

The average of 5 consecutive is 58. Find the first number?

Answer 1

average of 5 consecutive number = 58
sum of five number = 290
let's suppose the no be x , x + 1 , x + 2 ,x + 3, x + 4, x + 5.
then , 5x + 15 = 290
5x = 290 - 15
5x = 275
x = 275/5
= 55
so the first number 55.