The width of a rectangular a hall is 4/5 of its if the area of floor is 500meter square what is the difference between the length and breadth of the hall
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Answer : L-W=5
W= 4/5L
Area + LxW =4/5 L^2=500
L^2 =2500/4
L=50/2=25
W=4/5x25=20
L-W=5
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