Question

A submarine after travelling 100 km from the shore, descended km below the sea level. Then it
10
3
ascended about km. The next day, it again descended by km. What is its current position with
3
respect to the sea level? What is the horizontal distance of the submarine from the sea shore?​

Answer 1

Answer:

First submarine decend by 11/10 km so current position is -11/10 km .

Now it assends by

3/5 km so now position is -11/10 + 3/5 

   = -1/2

Again it descends by 9/10 so now current position is -1/2 - 9/10

 

              =  -14/10 = -7/5

so i is at 7/5 km below sea level.

- sign indicates that it is below sea level.