Answer:
By $41,000 the next year's sales are derived from the side effects of adding the new product to its sales offerings.
Step-by-step explanation:
For calculating the sale for next year, the tent expense and climbing gear is to be considered. With the help of these, the next year sale from the side effects can be derived. The sleeping bag cost is not to be considered so it would not be taken for calculation. The computation is shown below:
= (Tent Expense Next year + Climbing gear Next year ) - (Tent Expense Previous year + Climbing gear Previous year )
= ( $264,000 + $426,000) - ( $238,000 + $411,000)
= ($690,000 - $649,000)
= $41,000
Thus, by $41,000 the next year's sales are derived from the side effects of adding the new product to its sales offerings.