What is the amount that has accrued interest? I. After 7 years, the total simple interest was Rs. 7000. II. After 5 years, the sum plus simple interest was equal to the original payment.
A. I alone sufficient while II alone not sufficient to answer
B. I alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are necessary to answer
Answer:D
What is the amount that has accrued interest? I. After 7 years, the total simple interest was Rs. 7000. II. After 5 years, the sum plus simple interest was equal to the original payment.
A. I alone sufficient while II alone not sufficient to answer B. I alone sufficient while I alone not sufficient to answer C. Either I or II alone sufficient to answer D. Both I and II are necessary to answer
Explanation: Let's say the total is Rs. x.S.I. = Rs. 7000, and T = 7 years, according to I.Sum + S.I. for 5 years Equals 2 x Sum, Sum = S.I. for 5 years, according to II.S.I. for 7 years now equals Rs. 7000.1 year's S.I. = Rs. 7000/7 = Rs. 1000.As a result, both I and II are required to obtain the solution.