5. Beverage Distribution. R&B Beverages, Inc., provides a complete line of beer, wine, and soft drink products for distribution through retail outlets in central Iowa. Unit price data for 2015 and 2018 and quantities sold in cases follow.

Quantity Unit Price ($)

Item (cases) 2015 2018 Beer 35,000 17.50 20.15 Wine 5,000 100.00 118.00 Soft drink 60,000 8.00 8.80 Compute a weighted aggregate index for the R&B Beverage sales in 2018, with 2015 as the base period.