Mila builds her own frames for paintings. She has one frame with a length of 60 centimeters and a width of 45 centimeters. She builds a second frame with an equivalent ratio of length to width.

If the length of her second frame is 100 centimeters, what is its width?

Question

Mila builds her own frames for paintings. She has one frame with a length of 60 centimeters and a width of 45 centimeters. She builds a second frame with an equivalent ratio of length to width.

If the length of her second frame is 100 centimeters, what is its width?

jhonyy9 · Answer

so given that the length of the first frame is 60 cm and the width is 45 cm what is 60/45 
in case of the second frame we know that the length is 100 cm

so in this way you can write :

$$\frac{ 60 }{ 45 }= \frac{ 100 }{ x }$$

and from this equality just you need to find the x value

- to find the x value like a first idea cross multiplie and divide both sides by 60

hope helped understandably easy