I need help with my summer homework

Question

Background Information:

Tom and Diane have both signed up to compete in a race over the summer. This race is exactly 100 yards long. They have begun keeping track of how fast they can run to prepare for the race. Tom can run six yards in four seconds and Diane can run five yards in three seconds.

Questions:

1) Who runs faster, Tom or Diane? How do you know?

2) If they continue to run at the same speed, who will reach 100 yards first?

Answer 1

Determine the unit speed for both

Tom: 6 / 4, or 1.5 yds / sec

Diane: 5 / 3, or 1.666 yds / sec

Who runs faster?