TheArtDweeb TheArtDweeb

07-02-2017
Mathematics

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A picture is 5 cm longer than it is wide. the perimeter of the picture is 90cm. What is the width of the picture?

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Bansari Bansari

07-02-2017

Perimeter=2L+2W
L=W+5, substitute in place of 2L
90=2(W+5)+2W
90=2W+10+2W
90-10=4W
80=4W
80/4=W
W=20, if width is 20 than the length is 20+5=25 cm

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