Answer to Question #286214 in Algebra for JJJ

Question

jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. The original photo was 800 pixels wide by 600 pixels high. The new photo will be 1,260 pixels wide. What will the new height be? 

460 pixels

945 pixels

1,680 pixels

1,860 pixels

Answer 1

Solution:

Width of original photo = 800 pixels

Width of new photo = 1,260 pixels

Scale factor $=\dfrac{800}{1260}=\dfrac{40}{63}$

Now, height of original photo = 600 pixels

So, height of new photo $=\dfrac{63}{40}\times 600=945$ pixels

Thus, option (b) is correct.