An airplane collects a total of $5390 for tickets from the 80 passengers on an airflight. Each child passenget pays $25 for their flight ticket. There are 20 children on the flight. Each adult passenger either buys a standard ticket for $90 or a thrifty ticket for $60, for the flight.
How many ahult passengets have a thrifty ticket?
80 passengers = 20 children + 60 adults
Originally Posted by 0110kim
let x = number of adults with thrifty tickets
60 - x = number of adults without thrifty tickets
60x + 90(60-x) + 20(25) = 5390
solve for x