# Aptitude - Compound Interest - Discussion

Discussion Forum : Compound Interest - Data Sufficiency 1 (Q.No. 1)

*Directions to Solve*

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.

What is the rate of compound interest? | |

I. | The principal was invested for 4 years. |

II. | The earned interest was Rs. 1491. |

Answer: Option

Explanation:

Let Principal = Rs. P and Rate = R% p.a. Then,

Amount = Rs. | P | 1 + | R | 4 | ||||

100 |

C.I. = | P | 1 + | R | 4 | - 1 | ||||

100 |

P | 1 + | R | 4 | - 1 | = 1491. | |||||

100 |

Clearly, it does not give the answer.

Correct answer is (D).

Discussion:

4 comments Page 1 of 1.
Nikhil jadon said:
5 years ago

@Sougata.

By the formula:-

C.I=Amount(A) - Principle(P).

Hence, P get common. When we apply the Amount(A) formula in of C.I.

By the formula:-

C.I=Amount(A) - Principle(P).

Hence, P get common. When we apply the Amount(A) formula in of C.I.

Sougata said:
7 years ago

Why it is minus by one?

Akash said:
7 years ago

Because we don't have the value of p and r @Himanshu.

Himanshu said:
8 years ago

Why the answer is both are insufficient to answer?

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