Posted by **Meherin** on Wednesday, February 25, 2009 at 4:47pm.

This is the question.

In 1991, an American, Ann Trason, set a world record by running 100 km in 7hr,50min,09sec.

What is the best estimate of her average speed?

A.12 km per hour

B.14 km per hour

C.16 km per hour

D.18 km per hour

how do u figure this out? im stuck on this. im very thnkful 2 u if u just show me wat i m supposed to do. thx again :)

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