Posted by Angie on .
West Point lies on the west bank of the Hudson River in New York state, about 80 km from where the river enters the Atlantic Ocean. The elevation of West Point is 3 m. If sea level rises at a rate of 4 mm per year, how long will West Point remain above sea level?
How can I solve this?

Science/Math 
Reiny,
the fact that West Point is 80 km from the ocean has no bearing, assuming there are no rapids or waterfalls on the Hudson in that stretch, lol.
I simply comes down to dividing 3 m by 4 mm.
so you have to have the same units.
3 m = 300 cm
= 3000 mm
so 3000/4 = 750 years
looks safe for a while anyway.