How do I set up this problem?
Two bicycles depart from Miami Beach going in opposite directions. The first bicycle is traveling at
10 miles per hour. The second bicycle travels at 5 miles per hour. How long does it take until the bikes are 45 miles apart?

Question

How do I set up this problem?
Two bicycles depart from Miami Beach going in opposite directions. The first bicycle is traveling at 
10 miles per hour.  The second bicycle travels at 5 miles per hour. How long does it take until the bikes are 45 miles apart?

radar · Answer

d=st       d (distance) equal s (speed) times t (time)

A careful reading of this problem will provide d and s.

45 = 10t + 5t
45= 15t
t = 3 hours.

Verify: (10)(3) +5(3)=30 + 15 = 45
45 = 45.

Note.  since they are traveling in opposite directions the distance of 45 is equal to the sum of their respective distance traveled.

radar · Answer

did you follow with understanding?

anonymous · Answer

yes

radar · Answer

Great, and good luck with your studies.