The sum of three numbers is 20. The second number is 4
times the first number , and the sum of the first and third
is8. Find the numbers.

Answer Posted / vinod

x,y,z
1: x+y+z=20
2: y=4x
3: x+z=8

so:
x+4x+8-x=20
4x=12 so x=3
y=4*3 so y=12
z=8-x so z=5

Is This Answer Correct ?    8 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Write a python program to count the number of vowels in a string?

627


Write a python program to count the number of digits in a number?

643


Write a python program to check if a number is a prime number?

605


Write a program to reverse a number in python?

576


Given a circular list of integers (when you reach the end of the list you come back to the beginning), what is the most efficient algorithm to find the smallest integer in the list? For example: circular_list = [22, 52, 66, 82, 5, 8, 12, 19].

1514






plz tell me the exam date for clerks in sbi

1935


Write a python program to check if a number is an armstrong number?

581


Write a program to find sum of the digits of a number in python?

625


Write a function that takes an array of integers and returns that array rotated by N positions. For example, if N=2, given the input array [1, 2, 3, 4, 5, 6] the function should return [5, 6, 1, 2, 3, 4]

1986


Write a function that takes as input a binary tree, and prints out each level of the tree on a newline. For example: a / b c / / d e f will output: a b c d e f

1522


Write a function that takes an unsorted integer array, and returns a three element subset whose sum is zero.

1433


Can you write a program to find the average of numbers in a list in python?

597


Write a python program to check if a number is a strong number?

593


How do you set a global variable inside a function?

577


Write a function to efficiently convert a floating point number to a rational number. For example, given 0.125 return "1/8"

1311