Petra practiced her clarinet 2/4 of an hour on tuesday, 2/4 of an hour on thursday, and 1/4 of an hour on saturday. how many hours did petra practice her clarinet on those days

1 1/4 hours

step-by-step explanation:

2/4 + 2/4 + 1/4 = 5/4 or 1 1/4

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo