total cost of painting a wall is ₹10 per sq m is ₹1000 find the breadth of the wall if its length is 20m?
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Answer = 5m
Total cost ==> 1000₹
cost per sqmtr ==> 10₹
Area ==> 1000 / 10
==> 100 m^2
Length ==> 20 m
Area = l b
breadth = Area / length
= 100 / 20
= 5m
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2
total cost of painting a wall is ₹10 per sq m is ₹1000 find the breadth of the wall if its length is 20m?
solution
Total coast of painting = length ×breadth
₹1000. = 20m x breadth
₹10
breadth = ₹1000
₹10 × 20m
1000
500m
breadth = 5m
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