A customer is quoted a price of $390 for carpet including installation for one bedroom in her house. She wants to use the same carpet in the living room, which has double the length and width of her bedroom.
If the cost per square foot is the same for both rooms, what is the total cost for carpeting the bedroom and the living room, in dollars?

Question

A customer is quoted a price of $390 for carpet including installation for one bedroom in her house. She wants to use the same carpet in the living room, which has double the length and width of her bedroom.
If the cost per square foot is the same for both rooms, what is the total cost for carpeting the bedroom and the living room, in dollars?

anonymous · Answer

If the area of the bedroom is l*w, the area of the living room is 2l*2w --> 4*l*w.

anonymous · Answer

but how do I know what the l and the w are?

anonymous · Answer

Do you need to find out? You do know that the price for "L*W" is 390usd. You also know that the other rooms area was 4*LW. Do you follow? :)

anonymous · Answer

This is my worst subject lol, I really don't. :c explain it some other way?

anonymous · Answer

LW=390
4*LW=?
Simply insert the price (value) of LW into above (4*LW), what you'll get then is the price of the living room.

anonymous · Answer

4*390=1560
390+1560=1950

anonymous · Answer

You got two rooms. Bedroom and living room. Carpet covers the "Area" of the room. So, to find the answer, you need to find the "relative" area of the living room to the area of the bedroom. Since length and width are "twice", area will be four times larger (2L * 2W = 4LW). Therefore, total cost will be $390*5.

anonymous · Answer

Omg thats it? I feel dumb. Thank youuuuuuu both. <3 :)

anonymous · Answer

Well...the dumbness is in the problem! :)