Brandi jogged 2 1/2 miles in 30 minutes. sharna jogged 3 1/2 miles in 3/4 hour. who jogged at a slower rate.

You need to use the equation Distance (miles)=Rate (miles/hour) x Time (hours)

Brandi: 2.5 miles=rate (1/2 hour) r=5 miles per hour

Sharna=3.5 miles= rate (3/4 hour) r = 7 miles per hour.

Therefore brandi jogged at a slower rate. 

30/2 1/2
30/2.5
=12

3/4/3 1/2
45/3.5
=13
Sharna jogged at a slower rate because she took approximately 1 minute more per mile than Brandi did.

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