SOLUTION: The length of a tunnel was 22 1/2 times its width. If the length had been 50 feet less, it would have been 20 times the width. Find its length; its width.

Question 468815: The length of a tunnel was 22 1/2 times its width. If the length had been 50 feet less, it would have been 20 times the width. Find its length; its width.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the tunnel's width
Let = the tunnel's length
given:
(1)
(2)
---------------
Substitute in (1) for in (2)
(2)
Add to both sides
(2)
Subtract from both sides
(2)
(2)
And, since
(1)
(1)
(1)
The tunnel is 20 ft wide and 450 ft long
check answer:
(2)
(2)
(2)
OK
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