Question

the perimeter of a rectangular swimming pool is 154 m it's length is. 2m more than twice it's bredth ​

Answer 1

Answer:

$let \: \: \: its \: \: \: breadth \: \: \: be \: \: \: x \\ \\ so \: \: \: length \: \: \: is \: \: \: 2x + 2 \\ \\ perimeter \: \: \: of \: \: \: a \: \: \: rectangle \: \: \: = \: \: \: 2(l + b) \\ \\ 154 = 2(2x + 2 + x) \\ \\ 154 = 2(3x + 2) \\ \\ 154 = 6x + 4 \\ \\ 154 - 4 = 6x \\ \\ \frac{150}{6} = x \\ \\ 25 = x \\ \\ so \: \: \: breadth \: \: \: is \: \: \: = 25m \\ length \: \: \: is \: \: \: = 25 \times 2 + 2 \\ = 52m$