Simplify each expression. (unit 31. (2x + 3 2/5) + (5x - 4/5)
1 answer:
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We know Distance formula is Distance = speed * time
Let, the distance Omar traveled = d and speed is 10 miles per hour
Time taken t for the first trip
Let, the distance Omar traveled = d and speed is 30 miles per hour
Time taken t for the return trip
Total time taken =
Now,
Total distance = d+d= 2d
Average speed = =
His average speed for the entire trip from home to the gift store and back is
15 miles per hour