en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

the sum of three numbers is 105. the second number is 4 times the third. the first number is 9 less than the third. what are the numbers

Solution

the sum of three numbers is 105. the second number is 4 times the third. the first number is 9 less than the third. what are the numbers

Solution

The numbers : 10, 76, 19

Solution steps

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 105

y = 4 z

x = z - 9

x + y + z = 105, y = 4 z, x = z - 9 : x = 10, y = 76, z = 19

The numbers : 10, 76, 19

Popular Examples

Max had 20 apples, he ate 10 apples, how many apples does he have left Sandeep is saving up money to buy a car. Sandeep puts 8,401.00 into an account which earns 7% interest, compounded monthly. How much will he have in the account after 5 years?if the coin tossed 4 times in a row. what is the probability that no tail shows up Ngoc invests 13,000 at 12% simple interest for 1 year. How much is in the account at the end of the 1 year period?The radius of a circle is 20 cm. Find its circumference in terms of pie