As per this illustrated figure as in below, the total annual revenue of Robot Butlers, Inc. will be greatest when this produces and sells as: (w) 5,000 Robot Butlers. (x) 10,000 Robot Butlers. (y) 15,000 Robot Butlers. (z) 20,000 Robot Butlers.
![2426_Price Elasticity of Demand3.png](https://secure.tutorsglobe.com/CMSImages/2426_Price%20Elasticity%20of%20Demand3.png)
Hello guys I want your advice. Please recommend some views for above Economics problems.