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vishnu ks

· started a discussion

· 1 Months ago

DOUBT (Question: 86196.0 )

HOW DID YOU GET 145 AND 136

Question:
DIRECTIONS: Following line-graph shows the percentage profit earned by two companies A and B during the period of 2005 to 2011. 



If the income of Company A in 2007 and that of B in 2009 are \(\unicode{x20B9} \)52.49 lakh and \(\unicode{x20B9} \) 61.2 lakh respectively, what is the total expenditure of Company A in 2007 and that of B in 2009 ? 
Options:
A) \(\unicode{x20B9} \)79.6 lakh.
B) \(\unicode{x20B9} \)80.4 lakh. 
C) \(\unicode{x20B9} \)81.2 lakh. 
D) \(\unicode{x20B9} \)82.5 lakh. 
E) \(\unicode{x20B9} \)92.5 lakh. 
Solution:

Ans: (c) EA =52.49 X 100/145 =36.2 lakh

EB =61.2 X 100/136 =45 lakh

Total expenditure = 36.2 + 45 = 81.2 lakh

kanhaiya jha

· commented

· 1 Months ago

You must know the formula,
Profit percentage = {(Income-Expenditure)/Expenditure}*100

Now calculate expenditure(x) for Company A,
45 = {(52.49-x)/x}*100
45x=5249-100x
45x+100x=5249
145x=5249
x=5249/145 = 36.2

Do same for company B and then add both to get answer...
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