Question

jeremy runs a steell mill.to make a certain steel 3lbs of titanium is alloyed with 150 lbs of iron.if jeremy wants to make that same steel using 4.3 tons of titanium write an equation that he can use to find the number of tons of iron he must procure

Answer 1

x = 3, y = 150

k = y/x
k = 150/3 = 50

y = 50x....when  x = 4.3
y = 50(4.3) = 215 tons of steel

or use a proportion :
3/150 = 4.3/x
3x = 645
x = 645/3
x = 215 tons