Respuesta :

Pekachu42

Answer

7.5/4

Step-by-step explanation:

2/5x2=4/5

3/4x2=6/4

Half of 2/5 is 1/5

Half of 3/4 is 1.5/4

4/5+1/5=5/5= 1 hour

6/4+1.5/4=7.5/4