Posted by **thommini** on Saturday, March 6, 2010 at 3:31pm.

A cyclist bikes x distance at 10 miles per hour and returns over the same path at 8 miles per hour. What is the cyclist's average rate for the round trip in miles per hour? ( please help me ! )

- math -
**nancy**, Saturday, March 6, 2010 at 3:35pm
w=d/t

let x=80, so

(80+80)/(8hs+10hrs)

=8.8889 mi/hour

- math -
**PsyDAG**, Sunday, March 7, 2010 at 9:25am
I don't know why nancy picked 80 as a value for x, since it could be almost any value.

Since the distance is the same for both rates, it the mean of 10 and 8.

(10 + 8)/2 = 9

## Answer This Question

## Related Questions

- math - 18. A cyclist bikes x distance at 10 miles per hour and returns over the ...
- Math - A cyclist bikes x distance at 10 miles per hour and returns over the same...
- mathematics - a cyclist bikes over a path at 10 miles per hour. he returns over ...
- maths - A motorist travels 120 miles to his destionation at an average speed of ...
- Trigonometry- Help! - After one hour in flight, an airplane is located 200 miles...
- Pre-calc - a driver averaged 50 miles per hour on the round trip between akron, ...
- Pre-Calc - a driver averaged 50 miles per hour on the round trip between akron, ...
- math - substitute to find the value of the expression. A train must cover a ...
- math - A motorist travels 120 miles to his destination at an average speed of 60...
- Algebra 1 - Nico drives from school to the store at 25 miles per hour. He drives...

More Related Questions