Answer:

Step-by-step explanation:
We are given that
Cruise ship travel east across the river=19 m/minute
Total width of river=4250 m
We have to find time taken by ship to reach other side of the river.
Time taken by ship for travelling 19 m=1 minute
Time taken by ship for travelling 1 m=
minute
Time taken by ship for travelling 4250 m=
Hence, the time taken by ship to reach the other side=
minutes