yesterday, noah ran 2 and one half miles in three fifths hour. emily ran 3 and three fourths miles in five sixths hour. anna ran 3 and one half miles in three fourths hour . what was the unit rate for miles per hour for each person? who ran the fastest? use pencil and paper. describe two ways you can find who ran the fastest.

Step-by-step explanation:

S (distance) is the product of unit rate (or velocity) and time.

S = V × t => V = S/t

* Noah ran S1 = 2 = 3/2 miles in t1 = hour.

Therefore, the unit rate for miles per hour for Noah is

V1 = S1/t1 = = = 5/2 = 2.5 miles/hour

* Emily ran S2 = 3 = 15/4 miles in t2 = hour.

Therefore, the unit rate for miles per hour for Emily is

V2 = S2/t2 = = = 9/2 = 4.5 miles/hour

* Anna ran S3 = 3 = 7/2 miles in t3 = hour.

Therefore, the unit rate for miles per hour for Anna is

V3 = S3/t3 = = = 14/3 = 4.7 miles/hour

V1 < V2 < V3

=> Anna ran fastest among the three people.

step-by-step explanation: