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General Aptitude
3.2 Simple Interest - Data Sufficiency 1

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What is the sum which earned interest?
I.The total simple interest was Rs. 7000 after 7 years.
II.The total of sum and simple interest was double of the sum after 5 years.

A. I alone sufficient while II alone not sufficient to answer

B. I alone sufficient while II alone not sufficient to answer

C. Both I and II are not sufficient to answer

D. Both I and II are necessary to answer

E. None of the above

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Correct choice: D

Explanation:

Let the sum be Rs. x.

I gives, S.I. = Rs. 7000 and T = 7 years.

II gives, Sum + S.I. for 5 years = 2 x Sum Sum = S.I. for 5 years.

Now, S.I. for 7 years = Rs. 7000.

S.I. for 1 year = Rs.	7000	= Rs. 1000.
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Thus, I and II both are needed to get the answer.

Correct answer is (E).

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General Aptitude 3.2 Simple Interest - Data Sufficiency 1

General Aptitude
3.2 Simple Interest - Data Sufficiency 1