Hi I'm having a bit of trouble with this question in my math book. My sister and I have worked on it every possiable way we can think of. Here is the question.
you are building a rectangular planter for your school garden, You want the area of the bottom to be 90 ft^2. You want the length of the planter to be 3 ft longer then twice its width. What should the dimensions of the bottom of the planter be?

Question

Hi I'm having a bit of trouble with this question in my math book. My sister and I have worked on it every possiable way we can think of. Here is the question.
you are building a rectangular planter for your school garden, You want the area of the bottom to be 90 ft^2. You want the length of the planter to be 3 ft longer then twice its width. What should the dimensions of the bottom of the planter be?

anonymous · Answer

A=90^2
A=lw
w=2(l)

anonymous · Answer

w=2(l)+3*

anonymous · Answer

L=15 W=6

candycane · Answer

Thats the equation my sister and I used, but we couldn't find the answer

anonymous · Answer

you thought about too hard.    do it simple and without all the equation crap

candycane · Answer

Yea I'm still over thinking it.. I don't get how to solve this at all... Even with out the equation> its still really confusing

anonymous · Answer

i did that in my head in lik 30sec lol.     i did 10*9=90     4*2+3=11   11*4=44.. not enough.    6*2+3=15   15*6=90 PERFECT!

candycane · Answer

Oh my god that is simple... Thank you so much

anonymous · Answer

lol, yups. and no problem what so ever. mind giving a medal?

anonymous · Answer

Let w be the width.  Solve the following for w.$$w(2w+3)=90$$