it

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popolare Word Problems >

The sum of three numbers is 91. The first number is 9 less than the second. The third number is 3 times the second. What are the numbers?

Soluzione

T h e s u m o f t h ree n u mb ers i s 91. T h e f i rs t n u mb er i s 9 l ess t han t h e seco n d . T h e t hi r d n u mb er i s 3 t im es t h e seco n d . Wha t a re t h e n u mb ers ?

Soluzione

The numbers : 11, 20, 60

Fasi della soluzione

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 91

x = y - 9

z = 3 y

x + y + z = 91, x = y - 9, z = 3 y : x = 11, y = 20, z = 60

The numbers : 11, 20, 60

Esempi popolari

Using determinants find the area of the triangle whose vertici are(0, 0), (1, 2) and (4, 3).A number increased by 7 is greater than-19.if i have 560.31 how much do i need to get to 915.74 6 years ago, Gabby won some money in the lottery and put it in a bank account that earns 10% interest compounded annually. If Gabby currently has 1, 000.00 in the bank account, how much interest has she earned?What is the raggio of a sphere with a volume of 320ft^3 , to the nearest tenth of a foot?