Asked by Mike

One product costs $73 / kg. Let y be the price for x kg. What is x if y = 38?

I know the answer is 0.53 (rounded) but how exactly do I get there. What would be the formula to get this?
Answered by Mike
I know if you plot 72x you can obviously see that x=0.527778 where y=38, but I am assuming theres an actual logic way of doing this without a graph.
Answered by R_scott
unit price * units = total price ... 73 * x = 38