Question

I just need someone to set it up for me.

A blueprint for a house states that 2.5 inches equals 10 feet. If the length of a wall is 12 feet, how long is the wall in the blueprint?
a.
1 in.
c.
3 in.
b.
2 in.
d.
4 in.

Answer 1

@kittles<3 So we have the scale given, in the blue print 2.5 inches length is equal to 10 feet length in the house.
We need to find the length of a wall in blue print which is 12 feet in length. Can you try?

Answer 2

its cross multiply?

Answer 3

yes, we can do that way as well, let x be the height of wall in blue print. And try to frame the equation now

Answer 4

well can you set the problem up?

Answer 5

It's easy to set up, 2.5 inch in blue print is 10 feet length in house.
x feet in inch is 12 feet in length
Both the ratios are same and therefore equal. You can set up the equation from here, can;t you?

Answer 6

no no.I mean like 2.5/10=x/12 is that right?

Answer 7

yes, it's right

Answer 8

ohkay. (2.5)(x)=(10)(12) 2.5=120

Answer 9

2.5x=120. 120/2.5=48

Answer 10

you made a mistake
\[\frac{2.5}{10}=\frac{x}{12}\]