Tossing two coins and having one land on tails and one land on heads

1/2 probability for each coin, is that want your asking for

The probability would be 1/2 on each side. There is a 50% chance the coin could land on tails or heads, since the number of times it landed on each side is even and they are equal to each other.

J= r + 9 because since jessica rode 9 more miles than roger, you add 9 miles to rogers mileage.