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michael drove to a friends house at a rate of 40 mph. he returned the same route at a rate of 45 mph. the driving time for the round trip was 4 hours. what was the distance michael traveled?

Respuesta :

Answer:

151.58 miles

Explanation:

given,

total trip time = 4 hr                      

speed when drove to a friends house = 40 mph

speed when drove back = 45 mph          

[tex]\dfrac{x}{40} + \dfrac{x}{45} = 4[/tex]            

40 x + 45 x = 4 × (45 × 40)                      

95 x = 7200                                      

x = 75.79 miles                                    

Total distance travel by michael  is 2 x = 2 × 75.79 = 151.58 miles

Answer:

151.58

Explanation:

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