A soil supplement that weighs 16 lb contains iron, potassium, and mulch. The supplement contains thirteen times as much mulch as iron and twice as much potassiu

Question

I need help please. i dont understand

Answer 1

Here's what we know:

S = I + p + m (a supplement has iron, potassium, and mulch)

S = 16 (there's 16 pounds of the supplement)

m = 13I (there's 13 times as much mulch as iron)

p = 2I (there's twice as much potassium as iron)

 

Plug in the variable values:

16 = I + 2I + 13I

Simplify:

16 = 16I

Divide both sides by 16:

1 = I

So there's 1 pound of iron. You can use this to find potassium and mulch.