Doug biked

Doug biked 5 1/4 miles in 3/4 of an hour. What is his average speed?

Correct answer:

a =  7 mil/h

Step-by-step explanation:

s=5+14=214=5.25 mil t=3/4=34=0.75 h  a=s/t=5.25/0.75=7 mil/h

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