Question

Length of a rectangle is 5 m less than thrice it's breadth. If the perimeter of the rectangles is 150m, find its length.​

Answer 1

Let the breadth be x

Then the length will be 3x-5

Perimeter is 150

150=2(x+3x-5)

150=2(4x-5)

150=8x-10

150-10=8x

140=8x

140/8=x

17.5=x

Breadth is 17.5 m

Length= 3(17.5)-5

             = 52.5-5

             =47.5

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Answer 2

Answer:

the length of a rectangle is 5 m less than thrice its breadth find its length if its breadth is X metre