Question
The ratio of length and breadth of a rectangular field
is 5:9. If the total cost of surrounding it at the rate of Rs 7.50 per meter is Rs 4200, then find the difference between the length and breadth of the field. type-sscSolution
The ratio of length and breadth = 5:9 Length of field = 5x and breadth = 9x Then perimeter of field = 2(5x+9x) = 28x ATQ- 28x Ă— 7.50 = 4200 28x = 4200/7.50=560 x = 20 Now difference between length and breadth =4Ă—20 = 80 meters
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