SOLUTION: Two alloys, alloy A and alloy B, are to be melted down to form another alloy. Alloy B is 19 percent iron. If 42 kg of alloy A and 84 kg of alloy B are melted down and mixed, you wi
Algebra.Com
Question 35172: Two alloys, alloy A and alloy B, are to be melted down to form another alloy. Alloy B is 19 percent iron. If 42 kg of alloy A and 84 kg of alloy B are melted down and mixed, you will get a new alloy of 31 percent iron. How much iron is contained the alloy A? Express your answer in percentage. Put % after your answer.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Two alloys, alloy A and alloy B, are to be melted down to form another alloy. Alloy B is 19 percent iron. If 42 kg of alloy A and 84 kg of alloy B are melted down and mixed, you will get a new alloy of 31 percent iron. How much iron is contained the alloy A?
Let percentage of iron in alloy A be "x"
Amount of iron in alloy A is 42x
Amount of iron in alloy B s 0.19(84)=16.0 kg
EQUATION:
iron + iron = 0.31(126)=39.1 kg
42x + 16 = 39.1
42x=23.1
x=0.55= 55%
The percentage of iron in alloy A is 55%
Amount of iron in alloy A = 0.55(42 kg)= 23.1 kg
Cheers,
Stan H.
RELATED QUESTIONS
Solve the following problem algebraically. That is, set up an equation and solve it. Be... (answered by nerdybill)
An alloy is made by melting and combining two or more metals. A metalsmith has two... (answered by ikleyn,greenestamps)
An alloy is made by melting and combining two or more metals. A metalsmith has two... (answered by ikleyn)
A particular metal ally A has 20% iron and another alloy B contains 60% iron. How many... (answered by stanbon,Megan-notamathgeekatall)
an alloy of iron contains 49% iron while another alloy contains 28% iron. how many kg of... (answered by Alan3354)
Alloys A and B are composed of metals X and Y in the ratios 5:3 and 6:7 respectively by... (answered by robertb)
Two copper-nickel alloys are to be mixed to obtain 12.00 kg of an alloy that contains... (answered by josmiceli)
Suppose you combine ingots of 25% copper alloy and 50% copper alloy to create 40 kg of... (answered by Theo)
One alloy contains 80% gold and another alloy contains 55% gold. The two alloys are... (answered by mananth,dkppathak)