Question

Castel made a trip to the ferry office and back. On the trip there he traveled 60 km/h and on the return trip he went 45 km/h. How long did the trip there take if the return trip took four hours?

Answer 1

Assuming Castel takes the same route going out and on the return, the distance will be the same

We have:
Speed going out = 60 km/h
Speed return = 45 km/h
Time return = 4 hours

Distance return = 45 × 4 = 180 km

Return distance = Distance of travel out

180 = 60 × time
Time = 180 ÷ 60
Time = 3 hours