SOLUTION: A small heating unit takes 8 h longer to melt a piece of iron than it does a larger unit. Working together the heating units can melt the iron in 3 hours. How long would it take ea

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A small heating unit takes 8 h longer to melt a piece of iron than it does a larger unit. Working together the heating units can melt the iron in 3 hours. How long would it take ea      Log On


   

Question 437422: A small heating unit takes 8 h longer to melt a piece of iron than it does a larger unit. Working together the heating units can melt the iron in 3 hours. How long would it take each heating unit working alone to melt the iron?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3/x+3/(x+8)=1
x=4
x+8=12
check
3/4+3/12=1
9/12+3/12=1
ok