SOLUTION: If a candle burns at 2.5 mm a hour and its 20cm long. How long would it take to burn out in hours?

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: If a candle burns at 2.5 mm a hour and its 20cm long. How long would it take to burn out in hours?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 990991: If a candle burns at 2.5 mm a hour and its 20cm long. How long would it take to burn out in hours?
Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
.
2.5 mm = 0.25 cm.

Proportion:

0.25%2F20 = 1%2Fx.

It gives

x = 20%2F0.25 = 80 hours.