Discussion Forum



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)

If the expenditure of companies A and B in 2013 were equal and the total incomes of the two companies was 5.7lakhs. What was the total expenditure of the two companies in 2013?


A) 4 lakhs

B) 2 lakhs

C) 4.2 lakhs

D) Cannot be determined

E) None of these

Answer:

Option A

Explanation:

Let the income of company A in 2013 = x

Let the income of company B in 2013 = (5.7 - x)

Expenditure of company A = Expenditure of Company

B = E $\frac{40}{100} - \frac{x-E}{E}\times100$

$\frac{x}{E}$ = 1.4...(i)

AND $\frac{45}{100}$ = $\frac{(5.7-x)-E}{E}$ = 14.5 ...(ii)

Divide equation (ii) by (i) we get

$\frac{5.7-x}{E}\times\frac{E}{x} = \frac{145}{140}$

5.7 × 140 - 140x = 145x

798 = 285x

x = 2.8 lakhs

$\frac{x}{E}$ = 1.4

E = 2 lakhs

Total expenditure of two companies =(2+2)=4lakhs