Mr. Randolph drove 143 miles in 3.25 hours. At that rate, how far would he travel in 5 hours?

you need to get his rate per hr

143/3.25=?

Then multiply that times 5 hours
for your answer.

If 15 counters are a whole set how many are 3/5 of the set?

divide 15/5 if 3

my bad it is 15/5 is 3