SOLUTION: The distance from Lance’s home to his beach house is 80 miles. When biking back from his beach house to his home, his average speed was 20% slower than his average speed biking fr

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Question 1069156: The distance from Lance’s home to his beach house is 80 miles. When biking back
from his beach house to his home, his average speed was 20% slower than his average speed biking from his home to his beach house. If the roundtrip time was 9 hours, what was his average speed, in miles per hour, from the beach house to his home?
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
                    SPEED      TIME          DISTANCE
HOME to BEACH        r         80/r            80
BEACH to HOME       r*(4/5)    80/(r(4/5))     80
Total                           9












, speed from Home to Beach House.

Beach House to Home is 20% slower, .
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