It is an elastic good and to increase the revenue, the producer should decrease the price of the good.
Step-by-step explanation:
The good that has a price elasticity of demand with a coefficient of 1.6, the good is said to have elastic demand. For such a good, the producer should decrease the price of that good to increase its revenue. With the decrease in the price, the demand of the good will increase significantly. This will help him increase his revenue.