SOLUTION: how many liters of 20% silver must added to 80 liters of 50% silver to make an alloy that is 40% silver?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: how many liters of 20% silver must added to 80 liters of 50% silver to make an alloy that is 40% silver?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1015654: how many liters of 20% silver must added to 80 liters of 50% silver to make an alloy that is 40% silver?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
T=amount of 20%; F=amount of 50%
.
0.20T+0.50F=0.40(T+F)
0.20T+0.50(80)=0.40(T+80)
0.20T+40.0=0.40T+32.0
8.0=0.20T
40=T
.
ANSWER: 40 liters of 20% solution should be added.
.