Question

62 points! a bus traveled on a level road for 3 hours at an average speed of 20 miles per hour faster than it traveled on a winding road. The time spent on the winding road was 6 hours. Find the average speed on the levelroad if the entire trip was 482 miles.

Answer 1

• ≈ 66.89 mph

Explanation:

Let the average speed on the level road was x.

Then the average speed on the winding road was x - 20.

The total distance is:

• 3x+ 6(x - 20) = 482
• 3x + 6x - 120 = 482
• 9x = 482 + 120
• 9x = 602
• x = 602/9
• x ≈ 66.89 mph