ja

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

人気のある Word Problems >

The sum of three numbers is 66 . The second number is 2 times the third. The third number is 6 less than the first. What are the numbers?

解

T h e s u m o f t h ree n u mb ers i s 66 . T h e seco n d n u mb er i s 2 t im es t h e t hi r d . T h e t hi r d n u mb er i s 6 l ess t han t h e f i rs t . Wha t a re t h e n u mb ers ?

解

The numbers : 21, 30, 15

解答ステップ

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 66

y = 2 z

z = x - 6

x + y + z = 66, y = 2 z, z = x - 6 : x = 21, y = 30, z = 15

The numbers : 21, 30, 15

人気の例

six times the recipocal of a number equals 2 times the recipocal of 3. Find the number The sum of seven tiems a number and 5 more than the number is the same as the 差 between-25 and twice the number. What is the number?If you double a number and then add 20 , you get 4/7 of the original number. What is the original number?The second of two numbers is 5 more than twice the first. Their sum is 80. Find the numbers.The sum of two numbers is 45. The first is 9 less than the second. Find the numbers.