SOLUTION: How many kg of a 45% copper alloy must be added to 62kg of a 60% copper alloy to form an alloy, which is 50% copper.
Algebra.Com
Question 915661: How many kg of a 45% copper alloy must be added to 62kg of a 60% copper alloy to form an alloy, which is 50% copper.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How many kg of a 45% copper alloy must be added to 62kg of a 60% copper alloy to form an alloy, which is 50% copper.
======================
Equation:
copper + copper = copper
0.45x + 0.60*62 = 0.50(x+62)
------
45x + 60*62 = 50x + 50*62
-------
5x = 10*62
x = 124 kg (amt. of 45% alloy needed)
--------------
Cheers,
Stan H.
---------------
RELATED QUESTIONS
How many Kg of a 35% copper alloy must be added to 62 Kg of a 75% copper alloy to give... (answered by Fombitz)
How many kilograms (kg) of a 15% copper alloy must be melted with a 45% copper alloy to... (answered by Fombitz)
a certain alloy contails 75% copper and a second alloy 35% copper. how many kilograms of... (answered by Fombitz)
How much of a 75% copper alloy should be melted into 62 kg of a 35% copper alloy to... (answered by checkley79)
how much of 75% copper alloy should be melted into 62 kg of a 35% copper alloy to produce (answered by mananth)
How many kg of 15% cooper alloy must be melted with 45% copper alloy to obtain 60 kg of a (answered by richwmiller)
I am truly stumped with this one.
An alloy weighing 20 kg is 30% copper. How many kg... (answered by Earlsdon)
A copper alloy that is 35% copper is to be combined with an ally that is 75% copper. The (answered by josgarithmetic,ikleyn)
How much of an alloy with 30% copper must be added to 25 pounds of a second alloy which... (answered by nyc_function)