SOLUTION: the sides of rectangle are in the ratio 5 4 and its perimeter is 90cm. find its length and breadth

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Question 892122: the sides of rectangle are in the ratio 5 4 and its perimeter is 90cm. find its length and breadth
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
L%2FW=5%2F4
L=%285%2F4%29W
.
.
.
2%28L%2BW%29=90
L%2BW=45
Substituting,
%285%2F4%29W%2BW=45
%285%2F4%2B4%2F4%29W=45
%289%2F4%29W=45
W=%284%2F9%2945
W=20
Then,
L=%285%2F4%2920
L=25