Respuesta :

Answer:

81/90 = 9/10 = 90/100 = 90%


Answer:

90 percent has passed

Step-by-step explanation:

Percentage of the game that has passed =  time that has passed/ total time

                                                                     = 81/90

                                                                     =.9

Multiply by 100 to put in percentage form

                                                                    = .9 *100 %

                                                                   = 90 percent