A 3 m by 5 m rectangular wall hanging is hung in the center of a wall, The uncovered part of the wall is a border strip of uniform width. How wide is the border strip if the area of the wall hanging is three-sevenths of the area of the entire wall?
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Answer:
20 m sq
Step-by-step explanation:
Area of wall hanging =3*5m^2=15m^2
Area of wall=15*7/3m^2(area of wall hanging is 3/7 of wall)=35m^2
Area of border strip=35-15=20m^2
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