An industry is operating at a point on the demand curve where the quantity of output is 6,000

units. We are told that the elasticity of demand, expressed as a positive number, is 2. The

industry hires us as a consultant, and asks us to figure out the impact on the revenue collected by

the industry when the price is raised by $2. When we get home, we realize that we have not been

told the current price in this industry (but we do know that it is a lot more than $2, so that the

proposed price increase is a small fraction of the current price). Can we still work out the effect

on revenue, and if so what is it?