SOLUTION: The ratio of the length and breadth of a plot is 4 : 5. I f the length is 20 m less than the breadth, what is the perimeter of the plot?

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Question 709178:
The ratio of the length and breadth of a plot is 4 : 5. I f the length is 20 m less than the breadth, what
is the perimeter of the plot?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
4:5=(X-20):X CROSS MULTIPLY.
5(X-20)=4X
5X-100=4X
5X-4X=100
X=100 ANS FOR THE LONGER SIDE.
100-20=80 FOR THE SHORTER SIDE.
PROOF:
4/5=80/100
4/5=4/5
PERIMETER=2L+2W
P=2*80+2*100
P=160+200
P=360m. ANS.