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Ankit Aggarwal

· started a discussion

· 1 Months ago

From I & II statements, we can easily find the rate of interest without knowing the principal.
From I, 5300= PR/100......................(i)
From II, PR*R/10000 = 1060............(ii)
Put the value from (i) in (ii), we get,
5300*R/100 =1060
or, R=1060/53
or, R= 20%.

Question:
DIRECTION: In each of the following questions, a question is followed by information given in three statements. You have to study the question along with the statements and decide, the information given in which of the statements (s) is necessary to answer the question?

What is the rate of interest per cent per annum


I.Simple interest earned per annum is ₹5,300


II.The difference between the compound and simple interest on an amount is ₹1,060 at the end of 2 years.


III.An amount doubles itself in 5 years with simple interest.

Options:
A) All the three.
B) Only III.
C) Either II or III.
D) Only III or I and II.
E) Question cannot be answered even with the information in all three statements.
Solution:
Ans: (b) From statement I, we do not know the principal.
From statement II, data are incomplete. i.e. principal is unknown.
From statement III, we get the required date i.e.
If principal be \(\unicode{x20B9} \) x;
Interest = \(\unicode{x20B9} \) x;
Time = 5 years,

Ankit Aggarwal

· commented

· 1 Months ago

So, answer must be D.

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