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?

Answer 1

In one hour, they will be 15 miles apart.

Answer 2

In 2hours they will be 30 miles apart.

Answer 3

In 3 hours they will be 45 miles apart.
The answer is 3

Answer 4

How would I set this problem up ?

Answer 5

Let x be the number of hours required to be 45 miles apart. The
5 x + 10 x =45
15 x = 45
x=3