Answer:
No
Explanation:
Number of feets per second of treasure chest = 20ft / s
Depth of ocean floor = - 4200
To know if chest will reach ocean depth in 3 minutes ; use the Relation :
Distance = speed * time
Time = 3 minutes = (3 * 60) = 180 seconds
Depth of chest after 180 seconds :
-20 * 180 = - 3600 feets
Hence, chest can't reach ocean floor in 3 minutes
-4200 feets is deeper than - 3600 feets