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John went on a vacation to Florida. He drove 350 miles in 5hours. He ran into road work on the way home and his average rate of speed was twenty mph slower than his speed on the way there. If he left his condo at noon headed home what time will he get home?

Respuesta :

Answer:

7:00

Step-by-step explanation:

First I figured out the MPH for the ride there by dividing 350 by 5 which was 70 MPH which is the average rate of speed. Next, I subtracted by 20 since the ride home his average speed was 20 less than before which got me 50 MPH. Then, I divided 350 by 50 to get the hours it took him with his setback which was 7. Lastly, I added 7 hours to noon (12:00) and got 7:00

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