SOLUTION: The product of twenty less than eight times a number and thirty less than two times a number equals zero. Find the number(s).

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: The product of twenty less than eight times a number and thirty less than two times a number equals zero. Find the number(s).      Log On


   

Question 372626: The product of twenty less than eight times a number and thirty less than two times a number equals zero. Find the number(s).
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%288N-20%29%282N-30%29=0
Either the first factor equals zero or the second factor equals zero or possible both are equal to zero at the same time.
Solve for both cases.
8N-20=0
8N=20
N=20%2F8
N=5%2F2
.
.
2N-30=0
2N=30
N=15
The number is either 5%2F2 or 15