Question

The perimeter of a rectangular swimming pool is 168 m. Its length is 3m, more than twice its breadth. What is the length and breadth of the pool?​

Answer 1

Answer:

Let breadth (b) = x then

Length ( l) = x +3

We have

Perimeter (P) = 2 (l+b)

or, 168 = 2 ( x+3 +x )

or, 84 = 2x +3

or, 81 = 2x

---> x = 40.5 m

Hence, Length = x +3 = 43.5 m

Breadth = 40.5 m

Answer 2

Answer:

let the breadtH BE B

ATQ: length is 2B+3

so, perimeter=2(length+breadth)

168 =2(2B+3+B)

168=2(3B+3)

168=6B+6

6B=162

B=27

LENGTH=2B+3

=57