What change in Total Revenue will result in case of:

What change in Total Revenue will result in case of:
(i) Decrease in Marginal Revenue.
(ii) Increase in Marginal Revenue.

(i) An increase in Total Revenue at a diminishing rate or a decrease in Total Revenue will result from decrease in Marginal Revenue. In other words, Total Revenue increases at a decreasing’ rate or even falls, when Marginal Revenue falls.
(ii) An increase in Total Revenue at an increasing rate will result in an increase in Marginal Revenue. In other words, Marginal Revenue increases, when Total Revenue increases at an increasing rate.