A tour guide offers to show tourists 18 historical landmarks during a 12 3/4 day trip. How many days are needed to tourists to
see 12 historical landmarks?

a:6 1/2 days
b:8 1/4 days
c:8 1/2 days
d:6 1/4 days

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?