A jacket potato vendor charges $3.57 per potato sold. The variable cost of each potato served is $1.13. The stall has a fixed cost of $600 per week. A potato shortage results in an increased variable cost per potato of $.40, but selling prices remained unchanged.

How many additional potatoes will the vendor have to sell to still achieve the profit objective of $750 per week?

CALCULATED VARIABLES: tgtvol = 553