Problema Solution
A certain automatic soldering machine requires a solder containing half tin and half lead. How much pure tin must be added to 52 kg of a solder containing 62% lead and 38% tin to raise the tin content to 50%?
Answer provided by our tutors
Let 'x' represent the amount of 100% pure tin that should be added.
0.38*52 + x = 0.50(52 + x)
........
click here to see the equation solved for x
........
x = 12.48 kg
12.48 kg pure tin must be added .