Respuesta :

Answer:

2 3/4 hours

Step-by-step explanation:

if you total the students who studied 1/4 hour you get 2/4 hour and if you total the students who studied for 3/4 hour you get 2 1/4 if you add 2 1/4 and 2/4 you get 2 3/4

kskuei

Answer:

5 1/4 Hours

Step-by-step explanation:

Hope it helps got 100% on it

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