Let x and y be the two numbers
Therefore, (x/y) = (2/3),
(x + 8)/(y + 8) = 3/4 => x = 16, y = 24

 Total no's of radios can be placed in the box 

(25 * 42 * 60) / (7 *6 * 5) 

= 6300 / 210 

= 300

Required number of trees = 24/36 * 42 = 28

Let X be the value of 1 unit in terms of the currency being used.
Then, the initial expenditure on salary is 12 units * X = 12X.

We are given that 2 units = 12000, so we can set up the following equation:
2X = 12000.
Solving this equation gives us X = 6000.

Substituting this value back into the equation for the initial expenditure on salary, we find that the initial expenditure on salary is 12 units * 6000 = 72000.

Therefore, the initial expenditure on salary is 72000.

Here's another way to calculate C's share:

C's share = C's ratio * (total amount / sum of ratios)
= 5 * (1260 / 10)
= 5 * 126
= 630

The savings of Chetan and Dinesh are 3x – 5y and 4x – 7y respectively.
3x – 5y = 200 --- (1)
4x – 7y = 200 --- (2)
Multiplying (1) by 7 and (2) by 5 and subtracting the resultant equation (2) from resultant equation (1), we get x = 400.
The incomes of Chetan and Dinesh are 3x = Rs.1200 and 4x = Rs.1600 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!

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

 (9*12)/3 = 36

As per the question, B is inversely proportional to A3
i.e., B α 1/A3
Or, B =k/ A3
Given that, B=3, A=2
So, 3 = k/ 8, or k=24
Given that, B = 8/9
So, 8/9 = 24/A3
A3 = (9*24)/8 = 27
So, A = 3√ 27 = 3