Could you please help me with this word problem?

Question

On a blueprint with a scale of 1n:4 ft, the rectangular foundation for the house is 5 in. by 15 in. What are the actual dimensions of the foundation?

Thanks!

Answer 1

20ft by 60ft

Answer 2

If   1 in = 4 ft

then    5 in = 20 ft

and    15 in = 60 ft

Answer 3

This is easy.

If one inch= four feet...

then 5 inches= 20 feet

and 15 inches= 60 feet

Answer 4

1:4

5: ?

15:?

You can use cross mutiplycarion to solve this:

set up your equation

1:4

5:_  

Multiply 5 x 4 = 20

            then divide by one.. the answer is  5in: 20 ft

1:4

15:?  

15 x 4= 60  

      15in: 60 ft.

hope i helped!