##### 'The length of a rectangle exceeds its width by

 Algebra Tutor: None Selected Time limit: 1 Day

The length of a rectangle exceeds its width by 7inches and the area is 30 square inches what are the length and width of the rectangle'

Aug 26th, 2015

Thank you for the opportunity to help you with your question!

The length of a rectangle exceeds its width by 7inches

so

let length = x

and width =y

then , x= y+7....................eq 1

area is 30 square inches

=x*y

x*y = 30.................eq 2

now from x= y+7

substitute this value of x in the area equation

so,x*y = 30

(y+7)y=30

y^2+7y -30 =0

y^2+10y-3y -30=0

y(y+10)-3)(y+10)=0

(y+10)(y-3)=0

y= -10 or y=3

since y cannot be negative as it is width

y=3

that is width =3.........................answer

x= y+7

so,x = 3+7

x=10

that is length =10...........................................answer

length = 10 inches

width = 3 inches

Please let me know if you need any clarification. I'm always happy to answer your questions.....thank you
Aug 26th, 2015

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Aug 26th, 2015
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Aug 26th, 2015
May 29th, 2017
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