Question

Mr. Wong is looking at the plans for his new house. According to the plan, 2.4 inches equals 12 feet. If the length of a wall is 16 feet, how long is the wall on the plan?
a.
3 inches
c.
3.2 inches
b.
3.49 inches
d.
3.3 inches

Answer 1

Hi. I'm TJ Wong. I wonder what the heck dad is up to this time :>

LOL
In all seriousness, if 2.4 inches relates to twelve feet, how many inches relate to just one foot?

Answer 2

12

Answer 3

LOL
Sure... but I mean, if 12 feet is to 2.4 inches, what about 1 foot?
It's a proportion question
\[\Large 12:2.4 \ \ :: \ \ 1:\color{red}?\]

Answer 4

well im not very good at math and i never learned this.so idk.

Answer 5

Okay, let's start with basics, then.
Two quantities are in proportion:
\[\Large a:b \quad ::\quad c:d\]if the product of the inner numbers:
\[\Large a:\color{green}b \quad ::\quad \color{green}c:d\]
is equal to the product of the outer numbers\[\Large\color{orange} a:b \quad ::\quad c:\color{orange}d\]

Answer 6

ohkay.

Answer 7

That said, what are the inner numbers in this proportion:
\[\Large 12:2.4 \quad ::\quad 1:\color{red}?\]

Answer 8

12, 2?

Answer 9

There's no 2. only a 2.4 :P

Answer 10

lol ohkay 2.4

Answer 11

even then, wrong :P
THESE:
\[\Large a:\color{green}b \quad ::\quad \color{green}c:d\]
are the inner numbers.

Answer 12

12, d?

Answer 13

it's simply 3.2

Answer 14

ohkay.thanks.

Answer 15

y'all dumbasses its 21