Compute cost of an Item?

Question

im not sure if i say it right.

my question is how can i get the COST of an item if then given is the Net and the GST?

Answer 1

The basic equation is:

net = cost + (gst * cost) = cost * (1.0 + gst)

(with gst expressed as a decimal)

Therefore by algebra (dividing both sides by 1.0 + gst) you have:

cost = net / (1.0 + gst)