entry at a zoo costs $30 for an adult and $25 for a child. How much would it cost for 2 adults and 3

entry at a zoo costs $30 for an adult and $25 for a child. How much would it cost for 2 adults and 3 children?

Cost = Price * Quantity, so we have:
Cost = Price per adult * number of adults + Price per child * number of children
Cost = 30 * 2 + 25 * 3
Cost = 60 + 75
Cost = 135