Compute the average time it takes to sell a car in the country discussed below.

A high$-$end luxury car manufacturer sells $25,000$ cars per year to four dealerships in four regions of a country. Assume $50$ weeks per year.

Out of this total sale, $15\%$ of the cars are sold in North$-$Region, $11\%$ are sold in East$-$Region, $17\%$ are sold in West$-$Region, and the rest are sold in South$-$Region.

On average there are $3,000$ cars of this manufacturer in all dealerships.

Out of this total inventory, $21\%$ of the cars are in the dealership in North$-$Region, $14\%$ is in East$-$Region, $14\%$ is in West$-$Region, and the rest is in South$-$Region.

Compute the average time it takes to sell a car in this country. Enter your answers in terms of weeks with ONE decimal point.