Four consecutive integers add up to 390. What is the least of these integers?

解

F o u r co n sec u t i v e in t e g ers a dd u p t o 390. Wha t i s t h e l e a s t o f t h ese in t e g ers ?

The smallest number : 96

解答ステップ

Represent the numbers with

x

First number : x

Consecutive number 1 : x + 1

Consecutive number 2 : x + 2

Consecutive number 3 : x + 3

A.T.Q.:

x + x + 1 + x + 2 + x + 3 = 390

解く

x + x + 1 + x + 2 + x + 3 = 390 : x = 96

x + 1 = 96 + 1 = 97

x + 2 = 96 + 2 = 98

x + 3 = 96 + 3 = 99

Select the smallest solution:

96

The smallest number : 96