Originally a rectangle was twice as long as it is wide. When 4m were added to its length and 3m subtracted from its width, the resulting rectangle had an area of 600m^2. How do you find the dimensions of the new rectangle?
1 Answer
Apr 26, 2016
Original width
Original length
Explanation:
The trick with this type of question is to do a quick sketch. That way you can see what is happening and devise a method of solution.
Known: area is
Subtract 600 from both sides
It is not logical for a length to be negative in this context
so
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Check