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Pari drove home from college traveling an average speed of 59.1 mph and drove back to the college the following week at an average speed of 63.9 mph. If the total round trip took 7 hours, how much time did it take Pari to drive from home back to college? Express the time in hours and minutes. Round to the nearest minute.

Respuesta :

The time it took Pari to drive from home back to college is 3 hours 21 minutes

What is speed?

Speed is the ratio of the distance travelled to the time taken for the distance covered. It is expressed as;

Speed = distance/ time

From the information given, we have that;

  • Average speed from college =  59.1 mph
  • Average speed from home = 63.9 mph
  • Total time = 7 hours

Going home = x/ 59. 1

Going to college = x/ 63. 9

x/ 59. 1 + x/ 63. 9 = 7

63. 9x + 59. 1x = 7 × 63. 9 × 59. 1

122. 2x = 26, 435. 43

Make 'x' the subject

x = 216. 3 miles

Time from Home to college = 216. 3/ 63. 9 = 3. 39 = 3 hours 21 minutes

Thus, the time it took Pari to drive from home back to college is 3 hours 21 minutes

Learn more about speed here:

https://brainly.com/question/4931057

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