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

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?

anonymous · Answer

3 hrs

anonymous · Answer

Their relative speed to each other is 15mph. so 3 hours

anonymous · Answer

basically, you combine their speeds to find the total distance they travelled together