Question

Tinu has a rectangular field whose length and breadth are in the ratio 3:2. He wants to fence the field with barbed wire. If the cost of fencing the field at the rate of ₹12 per metre is ₹7200, find the dimensions of the field.

Answer 1

Answer:

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Answer 2

Answer: length = 30m , Breadth = 20m

Step-by-step explanation: let length be 3x and breadth be 3x

Perimeter = 2(l+b)

= 2 (3x +2x)

=2 X (5x)

= 10x

Metres fenced in 12 rupees = 1m

Metres fenced in 7200rupees=7200/12

=600 m

Perimeter =600

10x = 600

x = 600/10

x = 60 m

Length= 3x

= 3(60)

= 180m

Breadth = 2x

= 2(60)

= 120m

Ans: The length is 180m and breadth is of 120m.