The following data are pulled from a recent Quebec Manufacturing annual report.

Assets

Raw material inventory

$$180,000$

Work$-$in$-$process inventory

$$50,000$

Finished goods inventory

$$320,000$

Property, plant & equipment

$$500,000$

Other assets

$$250,000$

Total assets

$$1,300,000$

Condensed Income Statement

Revenue

$$2,400,000$

Cost of goods sold

$$800,000$

Other expenses

$$1,000,000$

Net income

$$600,000$

Calculate: a$.$ Percent invested in inventory, b$.$ Inventory turnover, and c$.$ Weeks of supply.