Respuesta :
Answer:
72 hours
Step-by-step explanation:
Rate =Distance / Time
Rate=400/18=22.222
Time=Distance/ Rate
Time= (1600 x 18)/400 = 72hours
Answer:
3 days
Step-by-step explanation:
as it took 18 hours to complete 400 km and 1600 divide by 4 is four so we multiply 18 by four and get 72 which is 3 days