math

posted by .

a model of a house is drawn using a scale of 3in=15ft. what is the length of the actual house if the model has a length of 15in

  • math -

    Cross multiply and solve for x

    3/15 = 15/x

  • math -

    so is it x=225in

  • math -

    No.

    Cross multiply:

    15 * 15 = 3x

    225 = 3x

    75 = x

    The actual house is 75 feet long.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. MATH

    A model train is a scale model created from actual measurements. The scale factor for HO or Half Zero model trains is 1:87. A typical engine is 50mm in height and 200mm in length. Determine the actual dimensions of the train engine. …
  2. MATH

    A model train is a scale model created from actual measurements. The scale factor for HO or Half Zero model trains is 1:87. A typical engine is 50mm in height and 200mm in length. Determine the actual dimensions of the train engine. …
  3. math (8th grade)

    The length of each piece in a model train railroad built on the HO scale is 1/87 of the actual length. Another popular model is the N scale, for which the scale is 1/160. Each car on a full-size passenger train is 80ft long. What is …
  4. Math

    The Table shows some common scales used in a model railroading.For each scale,find the length of a model of an 82-foot long boxcar.Give the length of each model in inches. Scale Name/Scale N 1:160, S 1:64, O 1:48
  5. math

    Puck is making a scale model of an airplane. The actual airplane is 98 feet long. The scale of the model is 1 cm : 4.7 ft. What is the length of the model?
  6. MAth

    A model length of 12 cm. represents an actual length of 102 feet. What is the scale model?
  7. Math

    Tim wants to model a doll house from a real house that measures 60 feet in length by 28 feet in width. He decides to use a scale in which ¼ inch equals 1 foot. Based on this scale, What will be the length of the longer side of Tim's …
  8. Math

    Tim wants to model a doll house from a real house that measures 60 feet in length by 28 feet in width. He decides to use a scale in which ¼ inch equals 1 foot. Based on this scale, What will be the length of the longer side of Tim's …
  9. Geometry

    Lacy made a scale model of her house. Her house is 45 feet tall. Her model is 9 inches tall. What is the scale of the model?
  10. math

    Luke build a model train to a scale of 1:25.calculate a copy of the table below using his scale. length of engine on the real x and on the model is 16cm. length of train on the real 20m and x on the model. height of train is x and …

More Similar Questions