A computer airplane has 81 seats. On the average, 90% of those who book fora flight show up for it. How many seats should the airline book for a flight if it wants to fill the plane? With explanation please:)

Write him a kind note telling him and no matter what he says know you're worth if he says no don't worry because in 20 years it won't matter so don't stress maybe in 20 years y'all be married don't get upset it he says no because being upset will not change the outcome