Average Speed

[happylagirl]

Can someone help me setting up the following problem?

"A sprinter runs 100 meters in 10.8 seconds. What is the sprinters average speed in miles her hour? ( 1meter = 3.28 ft)

 

[Ishuda]

Can someone help me setting up the following problem?

"A sprinter runs 100 meters in 10.8 seconds. What is the sprinters average speed in miles her hour? ( 1meter = 3.28 ft)

100 meters is what part of a mile? Call it M miles.
10.8 seconds is what part of an hour? Call it H hours.

miles per hour = M miles / H hours = (M/H) (miles/hour)