Astore located in vancouver, b. c., sells a computer for $1800 plus gst and pst. if the same model
is sold at the same price in a store in toronto, ontario, what is the difference in the prices paid by
consumers in the two stores?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?