A ship can cover a certain distance in 10 hours at a speed of 16nautical miles per hour. By how much should its speed be increased so that it takes only 8 hours to cover the same distance( a nautical mile in a unit of measurement used at sea distance or sea water that is 1852 meters).
Answers
Answer:
Step-by-step explanation:
A ship can cover a certain distance in 10 hours at a speed of 16 nautical miles per hour. By how much should its speed be increased so that it takes only 8 hours to cover the same distance? (A nautical mile in a unit of measurement used at sea distance or sea water i.e. 1852 metres)
(Scroll Down for Answer!)
Did you know that Algebra.Com has hundreds of free volunteer tutors who help people with math homework? Anyone can ask a math question, and most questions get answers!
OR get immediate PAID help on:
Type Your Question
Go!!!
Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(63712) About Me (Show Source):
You can put this solution on YOUR website!
A ship can cover a certain distance in 10 hours at a speed of 16 nautical miles per hour. By how much should its speed be increased so that it takes only 8 hours to cover the same distance?
----------
d = r*t = 16*10 = 160 nm
---------
t = d/r
8 = 160/r
r = 20 knots
An increase of 4 knots.
============
1 knot = 1 nm/hr
Answer by stanbon(75869) About Me (Show Source):
You can put this solution on YOUR website!
A ship can cover a certain distance in 10 hours at a speed of 16 nautical miles per hour. By how much should its speed be increased so that it takes only 8 hours to cover the same distance? (A nautical mile in a unit of measurement used at sea distance or sea water i.e. 1852 metres)
-----
Original DATA:
time = 10 hrs ; rate = 16 nmh ; distance = 10*16 = 160 km
---------------
New DATA:
time = 8 hrs ; rate = 16+x nmh ; distance = 128 + 8x km
---------------