If the average price of four shoes is 50 dollars, and three of thise pairs are priced at 35 40 and 55, what is the price of thr fourth pair of shoes

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?