Question

The length and breadth of rectangular piece of land are in the ratio 5:3 if the total cost of fencing it at 7.50 per metre is 3000 find length and breadth

Answer 1

Let length be 5x

Breadth be 3x

Perimeter = 2(L+B)

3000 =2(5x+3X)

3000 =2(8x

3000. =16x

3000/16 =x

187. =x

Length = 187x5=936

Breadth =187x3=561 Answer

May this helps you.

Answer 2

$\huge \pink{\bf AnSwer }$

Length and the breadth of a rectangle are of the ratio 5:3

Cost of fencing is ₹24 per m

Total cost = 9000

Length & Breadth of the rectangle

Solution

Let,

Length = 5x

Breadth = 3x

✭ Perimeter

→ Perimeter = Total Cost/Cost per m

→ Perimeter = 9000/24

→ Perimeter = 400 m

✭ Finding x

→ Perimeter = 2(l+b)

→ 400 = 2(5x+3x)

→ 400/2 = 8x

→ 200 = 8x

→ 200/8 = x

→ x = 25

✭ Length and Breadth

→ Length = 5x = 5×25 = 125 m

→ Breadth = 3x = 3×25 = 75 m