4. The length and breadth of a rectangular field are in the ratio 3:2. If the perimeter of the field is 250 m,
find the cost of reaping the field at 15 per 50 m².
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2(3x+2x)=250m
10x=250m
x= 25m
length= 3*25= 75m
breadth=2*25= 50m
Area= 75*30m²
Cost = 15*Area/50m²= 15*75*30/50
=3*3*75
= $9*75= $675...ans....
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