The Simon family attended a concert and visited an art museum. Concert tickets were $24.75 for adults and $16.00 for children, for a total cost of $138.25. Museum tickets were $8.25 for adults and $4.50 for children, for a total cost of $42.75. How many adults and how many children are in the Simon family?

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?