SOLUTION: A number is thrice another number. The sum of their reciprocals is 4. Find the numbers.
Algebra
->
Polynomials-and-rational-expressions
-> SOLUTION: A number is thrice another number. The sum of their reciprocals is 4. Find the numbers.
Log On
Algebra: Polynomials, rational expressions and equations
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Polynomials-and-rational-expressions
Question 909179
:
A number is thrice another number. The sum of their reciprocals is 4. Find the numbers.
Answer by
swincher4391(1107)
(
Show Source
):
You can
put this solution on YOUR website!
x = 3y
1/x + 1/y = 4
1/(3y) + 1/y = 4
1/(3y) + (3)/(3y) = 4
(1+3)/(3y) = 4
4/(3y) = 4
4 = 12y
y = 1/3
x = (1/3)*3 = 1
1 and 1/3 are the numbers.