Given that l<span>ast week christi spent 2 3/4 hours playing piano this week she spent 3 2/4 hours playing the piano, the extra time spent on piano this week will be: 3 2/4-2 3/4 Converting the above into proper fraction we get: 14/4-11/4 =(14-11)/4 =3/4 Thus she spent and extra 3/4 hours=45 minutes this week</span>
