Question

the width of a rectangle is 3 less than twice length. the perimeter is 51 cm . what is the length and width of the rectangle.

Answer 1

`length = x`

`width = 2x - 3`

`perimeter = 2(x + (2x - 3))`

`51 = 2(3x - 3)`

`51 = 6(x - 1)`

`x - 1 = 8.5`

`x = 9.5cm`

`length = 9.5`

`width = 2x - 3 = 2(9.5) - 3 = 16cm`