The share of A: B is 3: 4
The share of B: C is 2: 3

Note: Whenever such form is given, multiply a to b, then b to b, and then b to c.

i.e., A: B: C = 3*2: 4*2: 4*3
Or, A: B: C = 6: 8: 12
Or, A: B: C = 3: 4: 6
Sun of ratios = 13
Now, the share of B = [4/13] * 7800 = 2400
Share of C = [6/13]* 7800 = 3600

The difference between the share of B and C = 3600- 2400 = 1200

1/3 : 1/2 : 1/1 = 2 : 3 : 6

To find the ratio of A: B: C: D, you can follow these steps:

Find the ratio of A to B: A: B = 1: 2
Find the ratio of B to C: B: C = 3: 3
Find the ratio of C to D: C: D = 2: 3
Multiply all the ratios together: A: B: C: D = (132): (232): (212): (213) = 6: 12: 4: 6
This gives you the ratio of A to B to C to D as 6: 12: 4: 6.

If the sum of the ratios is 14 and the total amount is 5600, you can find the share of each quantity by multiplying each ratio by 400, as you did. 

This gives you the shares of A, B, C, and D as 1200, 2400, 800, and 1200, respectively.

The share of (A+C) is the sum of the shares of A and C, which is 2000. 

The share of (B+C) is the sum of the shares of B and C, which is 3200.

Total income = total days * per day salary

Let per day salary of Pervez = 4
Pervez can complete a piece of work in 30 days and his per day salary is 4
So, the total income of Pervez = 30* 4 = 120
Let per day salary of Sunny = 3

Similarly, Sunny can complete the same work in 50 days and his per day salary is 3
So, the total income of Sunny = 50 * 3 = 150

Let per day salary of Ashu Bhati = 2
Ashu Bhati can complete the same work in 40 days and his per day salary is 2
So, the total income of Ashu Bhati = 40* 2 = 80

Or, the ratio of total income of Pervez: Sunny: Ashu Bhati = 120: 150: 80 = 12: 15: 8
That means total income of Pervez = 12, but according to the question it is 144.
On multiplying 12 by 12, we get the original value.
So, multiply each by 12.
Hence, the total income of Pervez = 144
Total income of Sunny = 15*12 = 180
Total income of Ashu Bhati = 8*12 = 96

Let the First-year income = 2x
And, Second-year income = 3x
But ATQ, the second-year income = 45000
So, x = 45000/3 = 15000
Then, first-year income = 2*15000=30000

Similarly,
Let the first-year expenditure = 5y
The first-year expenditure =25000
So, y = 25000/5 = 5000
Second-year expenditure = 9y= 9* 5000 = 45000

Apply formula:

Income = expenditure + savings
Or, savings = income - expenditure
Or, first-year savings = 30000- 25000 = 5000
Similarly,
Second-year savings = 45000- 45000 = 0

Now, total saving in two years = first-year savings + second-year savings
Or, Total saving = 5000+0 = 5000.

Here is the equation version of the solution:

First year income: 2x
First year expenditure: 5y
First year savings: 2x - 5y = 5000
Second year income: 3x
Second year expenditure: 9y
Second year savings: 3x - 9y = 0
Total saving: 5000 + 0 = 5000

Where x and y are variables representing the first year income and expenditure, respectively.

Let the income of Pervez: Sunny: Ashu = 3x, 7x, 4x
The income of Pervez = 3x = 2400 (given in the question)
That means x = 2400/3 = 800
Now, the income of Sunny = 7x = 7*800 = 5600
Similarly the income of Ashu = 4x = 4*800 = 3200

Now,
Their expenditure is in the ratio of 4: 3: 5
So, let their expenditure is 4y, 3y, 5y
The expenditure of Pervez = income of Pervez - saving of Pervez
Or, expenditure of Pervez = 4y = 2400-300 = 2100
Or, y = 2100/4 = 525
Here 4y comes from expenditure's ratio
Similarly, the expenditure of Sunny = 3y = 3* 525 = 1575
The expenditure of Ashu = 5y = 5*525 = 2625

Saving's of Ashu = Income of Ashu - Expenditure of Ashu
Saving's of Ashu = 3200- 2625 = 575

That's correct! The income ratio of Pervez, Sunny, and Ashu is 3:7:4 and their expenditure ratio is 4:3:5. You correctly calculated that Pervez has an income of 2400 and expenditure of 2100, Sunny has an income of 5600 and expenditure of 1575, and Ashu has an income of 3200 and expenditure of 2625. That means Ashu has a saving of 575. Great work!

Distance covered in the ratio T: B: C = 4: 3: 2
Fair ratio per km. T: B: C = 1: 2: 4
So, the ratio of total fair T: B: C = 4: 6: 8

Sum of the ratio of total fair = 18
But ATQ, it is 720, so multiply 18 by 40.
Now, multiply each and every ratio with 40.
The total expenditure as fair on a train = 4*40=160

The ratio of land: water = 1: 2
In the northern hemisphere the ration of land: water = 2: 3

Note: Earth is divided equally into two hemispheres called northern hemisphere and southern hemisphere.

i.e., the northern hemisphere is 50% of the total earth.

We can say southern hemisphere = total area- northern hemisphere.

To make the northern hemisphere 50% of the total area
Multiply the ratio of the earth by 10 and northern hemisphere by 3
Now, earth's ratio Land: water = 1*10: 2*10 = 10: 20............... (i)
Northern hemisphere's ratio = 2*3: 3*3 = 6: 9...................... (ii)

Subtract equation i by ii

Hence, southern hemisphere = 10- 6: 20-9 = 4: 11

To find the ratio of a: b: c, you can follow these steps:

Find the ratio of a to b: a: b = 3: 4
Find the ratio of b to c: b: c = 2: 5
Combine the two ratios to find the ratio of a: b: c: a: b: c = 3: 4: 10
This gives you the ratio of a to b to c as 3: 4: 10.

The total salary of males: the total salary of females = 6:5
The salary of each male: salary of each female = 2:3

To find the number of men and women, divide the total salary of males and females by salary of each male and female.
i.e., 6/2: 5/3
Or, 18: 10 = 9: 5
So, the ratio of the number of males and females = 9:5