SOLUTION: Please help with this question. My son needs help. Thank you so much! Question: Two rectangles are similar. One is 5 cm by 12 cm. the longer side of the second rectangle is 8 c

Question 529802: Please help with this question. My son needs help. Thank you so much!
Question:
Two rectangles are similar. One is 5 cm by 12 cm. the longer side of the second rectangle is 8 cm greater than twice the shorter side. find its length and width.

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
5/12 = x/(2x+8)

5(2x+8) = 12x

10x+40=12x

10x=12x-40

10x-12x=-40

-2x=-40

x=(-40)/(-2)

x=20

So the shorter side is 20 cm and the longer side is 2*20 + 8 = 48 cm
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