Problema Solution
A metallurgist is making 10 kilos of an alloy from metal A and B. Metal A contains 25% silver and metal B contain 20 % silver. How many kilos of each metal should he add so that the alloy will be 22% silver?
Answer provided by our tutors
Let
x = kilos of metal A
y = kilos of metal B
x + y = 10
0.25x + 0.20y = 0.22*10
........
click here to see the system solved for x and y
........
x = 4 kg
y = 6 kg
The metallurgist should use 4 kg of metal A and 6 kg of metal B.