Answer: Option A. -> 41.25 crores
Expenditure of company R in 2000
$$\eqalign{
& = \frac{45\times100}{120} \cr
& = \text{Rs. 37.5 crores} \cr }$$
Let the income of company in 2000 be Rs. $$x$$ crores
$$\eqalign{
& \therefore 10 = \frac{x-37.5}{37.5}\times100 \cr
& \Rightarrow x - 37.5 = \frac{37.5\times10}{100} \cr
& \Rightarrow x - 37.5 = 3.75 \cr
& \Rightarrow x = 37.5+3.75 \cr
& \Rightarrow x = \text{Rs. 41.25 crores} \cr} $$

Answer: Option A. -> No loss and no profit
Total income of companies M and N
= Rs. (35 + 50) crores
= Rs. 85 crores
Total expenditure
= Rs. (45 + 40) crores
= Rs. 85 crores
Hence, the companies M and N had no loss and no profit.

Answer: Option C. -> 4.88% profit
  Total income of all the five companies
  = Rs. (35 + 50 + 40 + 40 + 50) crores
  = Rs. 215 crores
  Total expenditure of all the five companies
  = Rs. (45 + 40 + 45 + 30 + 45) crores
  = Rs. 205 crores
$$\eqalign{
& \therefore \text{ Profit percent}\cr
& = \frac{\text{Income - Expenditure}}{\text{Expenditure}}\times100 \cr
& = \frac{215 - 205}{205}\times100 \cr
& = \frac{1000}{205} \cr
& = 4.88\% \cr} $$

Answer: Option A. -> Q
$$\eqalign{
& \text{From bar diagram} \cr
& \text{Profit percent of company Q} \cr
& = \frac{40-30}{30}\times100 \cr
& = \frac{100}{3} \cr
& = 33\frac{1}{3}\% \cr} $$

Answer: Option D. -> Rs. 30.30 crores
$$\eqalign{
& \text{Income of company Q in 2000} \cr
& = \frac{100}{110}\times140 \cr
& = \frac{400}{11}\text{ crores} \cr
& \text{If expenditure in 2000 be Rs. x crores} \cr
& \text{Profit %} \cr
& \Rightarrow \frac{\text{Income - Expenditure}}{\text{Expenditure}}\times100=\frac{\frac{400}{11}-x}{x} \cr
& \Rightarrow \frac{20}{100} = \frac{400-11x}{11x} \cr
& \Rightarrow \frac{1}{5} = \frac{400-11x}{11x} \cr
& \Rightarrow 5\times400-55x=11x \cr
& \Rightarrow 66x = 2000 \cr
& \Rightarrow x = \frac{2000}{66} \cr
& \Rightarrow x = \text{Rs. 30.30 crores} \cr} $$

Answer: Option B. -> Rs. 1.13 lakhs
Total monthly salary of Arun in all the years
= 14000 + 18000 + 23000 + 21000 + 27000 + 25000
= Rs. 128000
Monthly salary of Suman in the year 2007 = Rs. 15000
Difference between their Salary
= 128000 - 15000
= Rs. 1.13 lakh

Answer: Option B. -> 2006
Year
Arun's income
Jyoti's income
Difference
2005
14000
9000
5000
2006
18000
11000
7000
2007
23000
18000
5000
2008
21000
27000
6000
2009
27000
26000
1000
2010
25000
35000
10000
In 2006 difference between Jyoti's monthly income and Arun's monthly income second highest.

Answer: Option D. -> None of these
In year 2006 Arun's salary
In year 2007 Suman's salary
In year 2005 Jyoti's salary
18000
15000
9000
18
15
9
6
5
3

Answer: Option A. -> 50%
Jyoti's income in 2008 = Rs. 27000
Jyoti's income in 2007 = Rs. 18000
∴ Increase percentage
$$\eqalign{
& = \frac{2700-1800}{18000}\times100 \cr
& = \frac{9000}{18000}\times100 \cr
& = 50\% \cr} $$

Answer: Option C. -> 83%
Monthly income of Suman in year 2009 = Rs. 29000
Monthly income of Jyoti in year 2010 = Rs. 35000
$$\eqalign{
& = \frac{29000}{35000}\times100 \cr
& = 82.85 \cr
& \approx 83\% \cr} $$