Respuesta :

Answer:

it would take him 85 seconds.

Step-by-step explanation:

4=5 secs

8=10

12=15

16=20

20=25

24=30

28=35

36=40

40=45

44=50

48=55

52=60

56=65

60=70

64=75

68=80

72=85 seconds.