Question

संपूर्ण पृथ्वी पर भूमि से पानी का अनुपात 1:2 है। तथा उत्तरी गोलार्ध पर यह अनुपात2:3 है। दक्षिणी गोलार्ध पर भूमि का पानी से अनुपात होगा?

Answer 1

दक्षिणी गोलार्ध पर भूमि का पानी से अनुपात 23:22 है

Answer 2

Answer:

4 : 11

Step-by-step explanation:

Given,

The ratio of the water and land in earth = 1 : 2

Let water in earth = x, land in earth = 2x,

So, the total area of earth = x + 2x = 3x ---- (1),

Now, the ratio of land and water water and land in north pole = 2 : 3,

Let water in north pole = 2y, land in north pole = 3y,

So, the total area of north pole = 2y + 3y = 5y

Again we know that the area of north pole and south pole are in the ratio of 1 : 1,

⇒ Area of north pole = $\frac{1}{2}$ × total area of earth

⇒ $\frac{1}{2}\times \text{ total area of earth}=5y$

$\implies \text{ total area of earth}=10y-----(2)$

From equation (1) and (2),

3x = 10y

$\implies x=\frac{10y}{3}-----(3)$

Hence, the water in south pole = water in earth - water in north pole

= x - 2y

$=\frac{10y}{3}-2y$

$=\frac{10y-6y}{3}$

$=\frac{4y}{3}$

Similarly land in south pole = 2x - 3y

$=\frac{20y}{3}-3y$

$=\frac{11y}{3}$

Hence, the ratio of water and land in the south pole = $\frac{4y}{3}:\frac{11y}{3}$

$=4:11$