SOLUTION: Please help me do this problem A 42-inch-long guitar is 10.5-feet-long on a stadium screen. A drum is 21 inches wide. How wide is the image on the screen?

Algebra ->  Proportions  -> Lessons -> SOLUTION: Please help me do this problem A 42-inch-long guitar is 10.5-feet-long on a stadium screen. A drum is 21 inches wide. How wide is the image on the screen?      Log On


   



Question 18973: Please help me do this problem
A 42-inch-long guitar is 10.5-feet-long on a stadium screen. A drum is 21 inches wide. How wide is the image on the screen?

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
First convert feet to inches. 10.5 feet->126 inches
Set up a ratio
42%2F126=21%2FxSolve for x
42x=126%2A21
42x=2646
x=63
So the image is 63 inches or 5.25 feet.