the total cost of whitewashing a wall at ₹25 per square metre is ₹ 12,150 if the length of the wall is 27 m, find the breadth of the wall.
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Answered by
31
Given :
Total cost of whitewashing wall = Rs 12150
Length of wall : 27 cm
Solution :
Total cost of whitewashing = (cost of per sq.metre ) * ( area of wall)
12150 = 25 * ( length * breadth )
12150 = 25 * ( 27 * b )
12150 = 25 * 27b
12150/25 = 27b
486 =27b
486/27 = b
18 m = breadth
hence the breadth of the wall is 18 m .
Total cost of whitewashing wall = Rs 12150
Length of wall : 27 cm
Solution :
Total cost of whitewashing = (cost of per sq.metre ) * ( area of wall)
12150 = 25 * ( length * breadth )
12150 = 25 * ( 27 * b )
12150 = 25 * 27b
12150/25 = 27b
486 =27b
486/27 = b
18 m = breadth
hence the breadth of the wall is 18 m .
Answered by
8
Answer:
18 m
Step-by-step explanation:
Cost of whitewashing = area × Rs25 per sq m
12150 = area × 25
2150/25 = area
486 sq m = area
Area = l × b
486 = 27 × b
486/27 = b
18 = b
Breadth = 18 m
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