Calm Down $($CD$)$ is a juice brand. CD currently sources oranges directly from farmers. Deliveries are received on $$Monday$$ of every week. The oranges are used to make $$Orange Juice $($OJs$)$ which are packaged into $250$mL bottles are sold. For every $250$mL bottle, $200$ grams of orange is required. The oranges are purchased at Rs$.50/$ Kg and every $250$mL bottle is sold at Rs$.25.$ Any unsold $250$mL bottles at the end of the week is distributed as charity to the local underprivileged population. Now, if the demand for $250$mL OJs in any given week follows a normal distribution with a mean of $2000$ and variance of $900$