The question in the textbook for practice is
Demand is given by Q=750P^1. (that is p to the minus one power). What
is total revenue and marginal revenue.

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Clarification of Question by econ_student-ga on 11 Oct 2005 12:13 PDT

My calculation so far is that P = 750/Q.

This means that total revenue is 750. And marginal revenue is always
zero. Ami i right?

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Clarification of Question by econ_student-ga on 11 Oct 2005 12:37 PDT

So far my workings will show that if the price is $1, then quantity is
750. If price change to $2 then quntity is 375. Based on the formular
P=750/Q. Which is a manipulation of the orginal formular.

Total revenue in either case is still 750. What have i done wrong?

Total Revenue = Demand * Price/ Unit

= Q * P
= (750/P) * P
= 750

Thus you are right.

Total Revenue = 750, Marginal revenue = 0