Problema Solution
Two high speed ferries leave at the same time from a same city to go to the same island. The first ferry, the Cat, travels at 38 miles per hour. The second ferry, the bird, travels at 20 miles per hour. In how many hours will the two ferries be 54 miles apart?
Answer provided by our tutors
leave at the same time from the same city to go to the same island
distance = speed * time
time = distance / speed
their relative speed is then:
38-20 = 18 mph
time until they are 54 miles apart:
54/18 = 3
in 3 hours, they will be 54 miles apart