An alloy which weights 118 kilograms is 10% silver.How much silver must be added to produce a metal that is 25% silver?
Let x = kg of silver to be added 11.8 kg of silver in 10% alloy
We can make an equation. 11.8+x=0.25(118+x)
Simplify it to be 11.8+x=29.5+0.25x
Subtract. 0.75x=29.5-11.8
Subtract 2:Electric Boogaloo 0.75x=17.7
Simplify it to be x=23.6
Yay!
