83. Duo, Inc., carries two products and has the following year-end income statement (000s
omitted):
Product AR-10 Product ZR-7
Budget Actual Budget Actual
Units 2,000 2,800 6,000 5,600
Sales $ $6,000 $7,560 $12,000 $11,760
Variable costs 2,400 2,800 6,000 5,880
Fixed Costs 1,800 1,900 2,400 2,400
Total Costs $4,200 $4,700 $8,400 $8,280
Operating income $1,800 $2,860 $3,600 $3,480
If products AR-10 and ZR-7 are substitutes for each other, a sales mix and sales volume
variation for the combined products can be calculated. If this combination is calculated, the net
effect on profit of the change in the unit sales mix is: (Round intermediate calculations to five
significant digits, and your final answer to the nearest whole dollar amount.)