# Aptitude - Simple Interest - Discussion

### Discussion :: Simple Interest - Data Sufficiency 1 (Q.No.1)

Each of the questions given below consists of a statement and / or a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement(s) is / are sufficient to answer the given question. Read the both statements and

• Give answer (A) if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.
• Give answer (B) if the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.
• Give answer (C) if the data either in Statement I or in Statement II alone are sufficient to answer the question.
• Give answer (D) if the data even in both Statements I and II together are not sufficient to answer the question.
• Give answer(E) if the data in both Statements I and II together are necessary to answer the question.

1.

 The simple interest on a sum of money is Rs. 50. What is the sum? I. The interest rate is 10% p.a. II. The sum earned simple interest in 10 years.

 [A]. I alone sufficient while II alone not sufficient to answer [B]. II alone sufficient while I alone not sufficient to answer [C]. Either I or II alone sufficient to answer [D]. Both I and II are not sufficient to answer [E]. Both I and II are necessary to answer

Explanation:

Given : S.I. = Rs. 50.

I gives, R = 10% p.a.

II gives, T = 10 years. Sum = 100 x S.I. = Rs. 100 x 50 = Rs. 50. T x R 10 x 10

Thus, I and II together give the answer. Correct answer is (E).

 Blacky said: (Jun 28, 2011) I think option A will be enough to find the sum SI=(P*T*R/100) 50=(P*T*R/100) P=x; t=1; r=10 (10 % 'per' annum i.e. r=10 for 1 year) 50=(x*1*10/100) x=50 ie Principal=50

 Subha Das said: (Aug 18, 2015) Very good. I think it help us so much.

 Pratik said: (Dec 28, 2017) Very good explanation, Thanks @Blacky.

 Sanu said: (Jan 16, 2018) Good explanation @Blacky.

 Apuroop said: (Jan 4, 2019) @Blacky. The principal will be 500.

 Gupta said: (Jan 27, 2019) Yes, right @Apuroop. The Principal will be 500rs.

 Harshitha said: (Jul 15, 2019) Thanks for explaining it @Blacky.