Refer to the graph and answer the given questions.

Percentage profit earned by two companies A and B over the six years.

2622021873_line graph 15a.JPG

2622021950_line graph 15b.JPG

1)

Expenditure of company B in 2009 and 2010 are 12 lakhs and 14.5 lakhs respectively. What was the total income of company B in 2009 and 2010 together (in lakh rupees)?


A) 39.75

B) 37.95

C) 38.75

D) 38.55

E) None of these

Answer:

Option B

Explanation:

Profit percent earned by company B in 2009 = 35%

Profit percent earned by company B in 2010 = 50%

Expenditure of company B in 2009 = 12 lakhs

Expenditure of company B in 2010 = 14.5 lakhs

Income of company B in 2009 = 35%

= $\frac{I-E}{E}\times100$

35 = $\frac{I-12lakh}{12 lakh}\times100$

(35 x 12) Lakh = 100I - 1200 lakh

420 lakh = 100I - 1200 lakh

I = 16.20lakh

lncome of company B in 2009 = 50%

= $\frac{I-E}{E}\times100$

50 = $\frac{I-14.5 lakh}{14.5 lakh}\times100$

(50 x 14.5) lakh = 100I - 14.50 lakh

2175 = (100) I = I = 21.75 lakhs

So, total income of company B in 2009 and 2010 = 16.2 + 21.75 =  37.95 Lakhs