Question

Height of a place A is 1800 m above sea level. Another place B is 700 m below sea level. What is the difference between the levels of these two places?

Answer 1

Height of place A = 1800 m from sea level
Height of place B = -700 m from sea level (i.e. 700 metres below)

So, difference in the heights is 1800 - (-700) = 1800 + 700 =2500 m

Answer 2

Answer:

The level difference between the two given places A and B =2500 m

To find:

The difference in the levels between the given places A and B

Solution:

Given that  

Height of the place A = 1800 m (above the level of the sea)

Height of the place B = 700 m (below the level of the sea)

Here, we should consider the place B’s height as -700 since it is below the sea level

Therefore, the level difference between the two places = height of place A –height of place B

=1800 –(- 700) =1800+700

=2500 m

Therefore, the level difference between the two places A and B =2500 m