Question

the length and breadth of a rectangular field are in the ratio of 5 is to 3. the cost of fencing it at rupees 7.50 per metre is rupees 3000. find its dimensions​

Answer 1

Answer:

The length is 125m and the breadth is 75m.

Step-by-step explanation:

ATQ, the ratio of length to breadth = 5:3

Thus, length is 5x and breadth is 3x.

Now the perimeter, of rectangle is 2(l + b).

Therefore, 2(5x+3x) = 16x.

The cost of fenscing at the rate of rupees 7.5 per metre is 3000

Thus, 16x  * 7.5 = 3000

Therefore, x = 3000/7.5*16  = 25,

Substituting this in the ratios, we get,

Length is 125m

Breadth is 75m

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