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The length nd the breadth of a hall are in the ratio of 4:3 and its height is 5.5m the cost of decorating its wall including doors nd window at Rs 6.60 per

sq. m is Rs 5082 find length nd the breadth of the room .


Say, l=4x and b=3x
h=5.5 . area of 4 walls=2(l+b)h =77x.
also area of 4 walls=total costing/costing per sq. m=5082/6.6=77.
ATQ, 77x=77
or,x=1. l-4*1-1 and b-3*1-1.
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