Question

7.The perimeter of a rectangular field is 80metres,if the length of the field is 4 metres more than twice its breadth.Find the length and breadth of the field ?

Answer 1

Answer: Length = 28 m , Breadth = 12 m

Explanation:

(p.s look at the document before looking at this explanation so that you understand.)

So,

lets keep the breadth of the field as x,

Breadth = x

Length = 2x + 4

Perimeter = 2 breadths + 2 lengths

80 = 2 ( x ) + 2( 2x + 4 )

80 = 2x + 4x + 8

80 = 6x + 8

6x = 80 - 8

= 72

x = 72/ 6

= 12 ( breadth )

Length = 2 (12) + 4

= 28

Checking

28m + 28m + 12m + 12m = 80

Answer 2

Explanation:

so you can do in this way , hope it will give you clue