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Paul's family drove 377 miles to the beach averaging 58 mi/h on the way there. On the return trip home, they averaged 65 mi/h.

What was the total time Paul's family spent driving to and from the beach?

A.
11.3 h

B.
11.6 h

C.
12.3 h

D.
13 h



plz answer asap

Respuesta :

C. 12.3h

377mi / 58mi/h=6.5h
377mi / 65mi/h = 5.8h
5.8h+6.5h= 12.3h
TaeKwonDoIsDead

Answer:

C


Step-by-step explanation:

We can use the formula  [tex]t=\frac{d}{r}[/tex] to solve this problem, easily.

Where

  • t is the time in hours
  • d is the distance in miles
  • r is the rate/speed in mi/hr

First leg, distance is 377 miles (d=377) and rate is 58 mph (r=58), hence time is:

[tex]t=\frac{d}{r}\\t=\frac{377}{58}\\t=6.5[/tex]


Second leg, distance is same (d=377) and the rate is 65 mph (r=65), hence time is:

[tex]t=\frac{d}{r}\\t=\frac{377}{65}\\t=5.8[/tex]


Adding both the times:

6.5 hours + 5.8 hours = 12.3 hours (total time)

Answer choice C is right.

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