Posted by meldrick on Thursday, July 10, 2014 at 8:28am.
the length of a car park is 120 m. longer than its width the area of the car park is 6400 m(2) how would you represents its width

math  Reiny, Thursday, July 10, 2014 at 8:46am
I would let the width = x
then the length is x+120
and
x(x+120) = 6400
x^2 + 120x  6400 = 0
which factors to
(x40)(x+ 160) = 0
x =40 or x = 160, which is not possible, can't have negative width
width is 40, length is 40+120 = 160
check: area = 40(160) = 6400 , yup!!

math  kole, Friday, July 29, 2016 at 7:14am
the length of a car park is 120 in longer than its width the area of the car park is 6400m
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