$\backslash$table$[[4,$Date,Activities,Units Acquired at Cost,Units Sold at Retail$],[5,,,$Units,Cost per unit,Total cost,Units,Selling price per,Total Sales$],[6,$January $01,$Beginning inventory,$150,$$$7\mathrm{.}50,$$$1,125\mathrm{.}00,,,],[7,$January $10,$Sales,,,,$110,$$$17,$$$1,815\mathrm{.}00$

Please help conpute cost per unit using weighted average. Pleas einclude formulas! Thank you!