vi

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Phổ biến Word Problems >

The sum of three consecutive numbers is 30. Find the numbers.

Lời Giải

T h e s u m o f t h ree co n sec u t i v e n u mb ers i s 30. F in d t h e n u mb ers .

Lời Giải

The numbers : 9, 10, 11

Các bước giải pháp

Represent the numbers with

x

:

First number : x

Consecutive number 1 : x + 1

Consecutive number 2 : x + 2

A.T.Q.:

x + x + 1 + x + 2 = 30

Giải

x + x + 1 + x + 2 = 30 : x = 9

x + 1 = 9 + 1 = 10

x + 2 = 9 + 2 = 11

The numbers : 9, 10, 11

Ví dụ phổ biến

george is 7 times as old as his son .in 25 years time he will be twice as old as his son .calculate his son,s present age The sum of the squares of two numbers.Sarah is going to invest in an account paying an interest rate of 6.8% compounded quarterly. How much would Sarah need to invest, to the nearest dollar, for the value of the account to reach 6,500 in 20 years?Michael is 3 times as old as Brandon. 18 years ago, Michael was 9 times as old as Brandon.How old is Brandon now?What is the volume of a sphere with a bán kính of 8.8 in, rounded to the nearest tenth of a cubic inch?