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The sum of 5 consecutive odd numbers is 145.What is the third number in this sequence?

פתרון

The sum of 5 consecutive odd numbers is 145.What is the third number in this sequence?

פתרון

The number : 29

צעדי פתרון

Represent the numbers with

x

:

First number : x

Consecutive number 1 : x + 2

Consecutive number 2 : x + 4

Consecutive number 3 : x + 6

Consecutive number 4 : x + 8

A.T.Q.:

x + x + 2 + x + 4 + x + 6 + x + 8 = 145

x + x + 2 + x + 4 + x + 6 + x + 8 = 145

פתור את:

x = 25

x + 2 = 25 + 2 = 27

x + 4 = 25 + 4 = 29

x + 6 = 25 + 6 = 31

x + 8 = 25 + 8 = 33

The number : 29

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