Question 100 Problem Solving 2020 GMAT Official Guide
Question 100 Problem Solving 2020 GMAT Official Guide
Video explanation [PQID: PS40602.01]: On a scale drawing, a rectangle 1 inch by…
Comments
Aswin Kumarsays
Hi Mahendra I approached the question by multiply 300* 12, I got 3600 inches this divided by 6*6 gives me 100 tiles, only If I multiply this by 12 inches I am getting 1200
The $300$ you obtained is the area of the floor in square feet. To convert from square feet to square inches, you have to multiply by $12 \times 12$. This is because $1$ square feet is equal to $144$ square inches, whereas one linear feet is equal to $12$ inches.
Hi Dude, according to conditions the question gives, 1 inch= 15 feet, and 1 foot =12 inches. We could conclude that 1 inch = 15*12=180 inches, which doesn’t make sense.
The “1 inch = 15 feet” piece is for the scale drawing, meaning on paper we are drawing a representation for the floor of the room, and we will set 1 inch of thr drawing to equal 15 feet of the actual length in the room. Of course, you could say that 1 inch on the scale drawing is equal to 180 inches of actual length. That would be correct here as long as you indicate what those inches represent.
Hi Mahendra I approached the question by multiply 300* 12, I got 3600 inches this divided by 6*6 gives me 100 tiles, only If I multiply this by 12 inches I am getting 1200
Can you help me with where I am going wrong.
Hi Aswin,
The $300$ you obtained is the area of the floor in square feet. To convert from square feet to square inches, you have to multiply by $12 \times 12$. This is because $1$ square feet is equal to $144$ square inches, whereas one linear feet is equal to $12$ inches.
I hope this makes sense.
Dabral
Hi Dude, according to conditions the question gives, 1 inch= 15 feet, and 1 foot =12 inches. We could conclude that 1 inch = 15*12=180 inches, which doesn’t make sense.
So could you tell me where I got it wrong?
George,
The “1 inch = 15 feet” piece is for the scale drawing, meaning on paper we are drawing a representation for the floor of the room, and we will set 1 inch of thr drawing to equal 15 feet of the actual length in the room. Of course, you could say that 1 inch on the scale drawing is equal to 180 inches of actual length. That would be correct here as long as you indicate what those inches represent.
Got it! Thanks!
Got it! Thanks!