SOLUTION: A metal alloy weighing 6 lb. and containing 4% iron is melted and mixed with 2 lb. of pure iron. What percent of the resulting alloy is iron?

Question 817030: A metal alloy weighing 6 lb. and containing 4%
iron is melted and mixed with 2 lb. of pure iron.
What percent of the resulting alloy is iron?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A metal alloy weighing 6 lb. and containing 4%
iron is melted and mixed with 2 lb. of pure iron.
What percent of the resulting alloy is iron?
-------
iron + iron = iron
0.04*6 + 1*2 = x(6+2)
------
Multiply thru by 100 to get:
-----
4*6 + 200 = x(800)
800x = 224
---
Ans:: x = 0.28 - 28%
==================
Cheers,
Stan H.
RELATED QUESTIONS
a metal alloy weighing 2 lb & containing 88% iron is melted & mixed with 10 lb. of pure... (answered by josgarithmetic)

A metal alloy weighing 3 mg and containing 40% iron is melted and mixed with 12 mg of... (answered by stanbon)

A metal alloy weighing 10 lb. and containing 10% nickel is melted and mixed with 8 lb. of (answered by lwsshak3)

A metal alloy weighing 12 lb. and containing 20% copper is melted and mixed with 3 lb.... (answered by lwsshak3)

A metal alloy weighing 9 lb. and containing 75% copper is melted and mixed with 11 lb. of (answered by stanbon)

1) 7 fl. oz. of a 70% sugar solution was mixed with 3 fl. oz. of pure water. Find the... (answered by josmiceli,josgarithmetic)

A metal alloy weighing 2 oz. and containing 80% silver is melted and mixed with 3 oz. of... (answered by josmiceli)

A metal alloy weighing 2 mg and containing 10% copper is melted and mixed with 1 mg of... (answered by josgarithmetic)

a metal weighing 6 mg and containing 4% copper is melted and mixed with 2 mg of a... (answered by Theo,greenestamps,josgarithmetic)