The water temperature in the ocean varies inversely with the depth of the water. The deeper a person dives, the colder the water becomes. At a depth of 700 meters, the water temperature is 3º Celsius. What is the water temperature at a depth of 300 meters?

7°C

Explanation:

Given that ;

The water temperature in the ocean varies inversely with the depth of the water.

Let the water temperature be =  

Let the depth of the ocean = d

So:

   ---- Equation 1

At a depth of 700 meters, the water temperature is 3º

3 × 700 = 2100  ----- Equation 2

What is the water temperature at a depth of 300 meters?

300            ------- Equation (3)

Equating equation 2 and 3 together; we have:

2100 = 300

=  

= 7°C

∴ the water temperature is 7°C at a depth of 300 meters

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