Question
The cost of fencing a rectangular plot at the rate of
Rs. 12/metre is Rs. 960. If the ratio of the length to breadth is 5:3, find the area of the rectangular plot.Solution
Let the length and breadth be 5x metres and 3x metres respectively.
According to the question,
2 × (5x + 3x) = 960 / 12
Or, 2 × 8x = 80
Or, 16x = 80
Or, x = 5 metres
Therefore, area of the rectangular plot = 5x × 3x = 15x² = 15 × 25 = 375 m²
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