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人気のある Word Problems >

The sum of 3 consecutive odd numbers is 51 What is the second number in this sequence?

解

T h e s u m o f 3 co n sec u t i v e o dd n u mb ers i s 51 Wha t i s t h e seco n d n u mb er in t hi s se q u e n ce ?

解

The number : 17

解答ステップ

Represent the numbers with

x

:

First number : x

Consecutive number 1 : x + 2

Consecutive number 2 : x + 4

A.T.Q.:

x + x + 2 + x + 4 = 51

解く

x + x + 2 + x + 4 = 51 : x = 15

x + 2 = 15 + 2 = 17

x + 4 = 15 + 4 = 19

The number : 17

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