The width of the rectangles is 50% its length. Given that the perimeter of 3 such rectangles is 90 cm, find the length of 1 rectangle.

Guest May 1, 2021

#1**+2 **

If the perimeter of 3 rectangles is 90cm, the perimeter of 1 is 30.

If the width of the rectangle is x, than the whole rectangle would be 6 x.

30=6x, so x=5

the length of one rectangle is **10 **

your welcome :)

mathisopandcool May 1, 2021

#2**+2 **

sorry I didnt explain it in too much detail I didnt have much time.

I hope you understand it.

mathisopandcool
May 1, 2021

#5**+1 **

This might be a better visual that made!

|------------|

| |

|30, or 6x | x

| |

| |

|------------|

2x

mathisopandcool
May 1, 2021

#7**+2 **

Honestly, I think @mathisopandcool's solution is nice and clear enough. @guest, it is not his/her fault if YOU can't understand a thing. Why are you being rude?

MathProblemSolver101
May 1, 2021

#8**+1 **

The width of the rectangles is 50% its length. Given that the perimeter of 3 such rectangles is 90 cm, find the length of 1 rectangle.

Let l be the length

Let w be the width

w=1/2 l (1)

2(l+w) * 3 = 90 (2)

Simplifying (2): 2l+2w=30

l+w=15 (3)

(1) & (2) : 3/2 l = 15

1/2 l = 5

L = 10

Length is 10.

Enjoy you ungrateful guest.

MathProblemSolver101 May 1, 2021