Question

the length of a rectangle plot is 40 metres more than its breadth . If the cost of fencing the plot 53 per metre is rupees 7600 what is the length of the plot in metres ​

Answer 1

Answer:

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equating eq (1) and eq (2)

200 = 2 ( x + y )

x + y = 100 -(3)

x = y + 40 -(4)

substituting eq (4) in eq (3)

y + 40 + y = 100

2y = 60

y = 30

substituting y = 30 in eq (4)

x = 30 + 40

x = 70

Therefore the length of the field

Let the breadth of the rectangular plot be y and length be x

l = x metres

b = y metres

According to the conditions ;

Perimeter = 2 ( l + b )

= 2 ( x + y ) -(1)

Perimeter = 10600/ 53

= 200-(2)