Respuesta :
He spends 45 minutes doing math.
Work - 2.25 time 60 gives the number of minutes he spent total = 135.
135 divided by 3 give the amount of time he worked on math since he
spent a third of his time on math.
Work - 2.25 time 60 gives the number of minutes he spent total = 135.
135 divided by 3 give the amount of time he worked on math since he
spent a third of his time on math.