Question

A photograph is 3 cm wide and 5 cm long. If the photograph is enlarged so that the long side is 15 cm, how wide will the photograph be?​

Answer 1

Answer:

9cm wide is the correct answer

Answer 2

Answer:

9 cm

Step-by-step explanation:

Let x= width of the enlarged photograph

By ratio and proportion:

$( \frac{width \: of \: orig \: photo}{length \: of \: orig \: photo} ) = ( \frac{width \: of \: enlarged}{length \: of \: enlarged}$

$\frac{3}{5} = \frac{x}{15}$

$x = 15( \frac{3}{5} )$

$x = 9 cm$