Answer:
it would be 3 weeks because there are 7 days in a wekk so if u divide 21 by 7 it would give u 3
Step-by-step explanation:
I know that when you are explaining, you need to add in all of the work that you did.
Answer:
pdodjxjsjsjsnamaishdbsjsbdsjbss
Recall your d = rt, or distance = rate * time
notice, the time he took to cover 63 miles with the wind, is the same amount of time he took against it with 51 miles only, let's say, he took "t" hours long
and he was cycling at a rate of "r"
thus

solve for "r"