SOLUTION: The length and width of a rectangle have ratio 2 is to 3.The perimeter is 20cm.Find the length and the width.

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Question 365454: The length and width of a rectangle have ratio 2 is to 3.The perimeter is 20cm.Find the length and the width.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

l/w = 2/3

l = (2/3)w

question states

20cm = w + w + (2/3)w + (2/3)w

solve for width

20cm =10/3 w

6cm = width, length then is 4cm



checking our answer

2*6cm + 2*4cm = 12cm + 8cm = 20cm