SOLUTION: Easy Word Problem Two rectangles have the same area of 120m^2. the difference of their length 5m and their breadth is 4m find their sides Please solve it in manner like let......

Question 762860: Easy Word Problem
Two rectangles have the same area of 120m^2. the difference of their length 5m and their breadth is 4m find their sides
Please solve it in manner like let........be x
and let...........be y
Please Help Thank you in advance
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Call the rectangles r1 and r2
Call the breadth of r1
Call the length of r1
--------------------
The breadth of r2 =
The length of r2 =
( if I made the signs the same, the area of r2
would be greater than the area of r1 )
---------------------------
(1)
(2)
--------------------------
(2)
(2)
-------------------------
(1)
By substitution:
(2)
(2)
(2)
(2)
(2)
(2)
(2)
Complete the square
(2)
(2)
(2)
(2)
(2)
(2)
and, since
(1)
(1)
(1)
----------------
And, also,
(2)

-----------------
Rectangle r1 has dimensions 8 and 15
Rectangle r2 has dimensions 12 and 20
----------
check:

and

OK

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