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Science-Related Homework Help Algebra Topic started by: presidente on May 21, 2018



Title: Number A divided by number B equals one-fourth. Number B divided by number A equals two times number
Post by: presidente on May 21, 2018
Number A divided by number B equals one-fourth. Number B divided by number A equals two times number A. What are the two numbers?


Title: Re: Number A divided by number B equals one-fourth. Number B divided by number A equals two times ...
Post by: Aliya1 on May 21, 2018
Number A divided by number B equals one-fourth.
A/B = 1/4
Cross multiply
B = 4A
Number B divided by number A equals two times number A.
B/A = 2A
Replace B with 4A (from the fist statement)

4A/A = 2A
Cancel A on the left
4 = 2A
2 = A
then
B = 4(2)
B = 8
:
What are the two numbers? A=2; B=8