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.

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.

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.