Problema Solution
a rectangular room measures 12 feet by 15 feet. The entire room is to be covered with rectangular tiles that measure 3 in by 2 in. if the tiles are sold at ten for $1.20 what will it cost to tile the room?
Answer provided by our tutors
1 ft = 12 in
12 ft = 12*12 = 144 in
15 ft = 15*12 = 180 in
The area of the room in in^2 is: 144*180 = 25920 in^2
The area of one tile is: 3*2 = 6 in^2
The total number of tiles needed is: 25920/6 = 4320 tiles
10 tiles cost $1.20
Le 'x' represent the cost of 4320 tiles.
We have the following proportion:
10 : 1.20 = 4320 : x
........
click here to see the equation solved for x
........
x = $518.4
It will cost $518.4 to tile the room.