SOLUTION: A factory measuring 60 m by 80 m is surround by a lawn of uniform width. If the area is 57 m2 less than the factory find the width of the lawn.

Question 1083209: A factory measuring 60 m by 80 m is surround by a lawn of uniform width. If the area is 57 m2 less than the factory find the width of the lawn.
Found 2 solutions by josmiceli, MathTherapy:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The area of the factory is
m2
The area of the lawn is

------------------------
The combined area of factory and lawn is

------------------------
Let = the width of the lawn
I can now say:

-----------------

The width of the lawn is about 28.2 m
-------------------------------------
check:

Error due to rounding off, I think
check the math

Answer by MathTherapy(10549) (Show Source): You can put this solution on YOUR website!

A factory measuring 60 m by 80 m is surround by a lawn of uniform width. If the area is 57 m2 less than the factory find the width of the lawn.

Width of the lawn:
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