Question

On a picture the size of rectangular room is 5 cm by 7 cm. Actually the shorter side of the room is 6m. What is the scale of a picture and how long is the longer side of the room?

Answer 1

To solve this problem you must apply the proccedure shown below:

1. You have that the dimensions of the picture in meters is:

`5 cm=0.05m\\ 7cm=0.07m`

2. As you can see, the shorter side of the picture is
`0.05m`.

3. Then, if the shorter side of the room is
`6m`, you can find the scale of the picture by dividing the shorter side of the room by the shorter side of the picture, as following:

`(6m)/(0.05m) =120` or
`1:120`

4. Then, you can calculate the longer side of the room by multiplying
`120` by the longer side of the picture:

`(0.07m)(120)=8.4m`

Therefore, the answer is: The scale of the picture is
`1:120` and the longer side of the room is
`8.4 m`.