Multiple choice

The question given below contain two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question? Mark answer- Find the compound interest on Rs. 12000? I. The rate of interest is 10% per annum. II. The difference between C.I. and S.I. is Rs. 70.

  1. If statement I alone is sufficient but statement II alone is not sufficient.

  2. If statement II alone is sufficient but statement I alone is not sufficient.

  3. If each statement alone (either I or II) is sufficient.

  4. If statement I and II together are not sufficient.

  5. If both statements I and II together are sufficient, but neither statement alone is sufficient.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To find compound interest, we need: principal (given as Rs. 12000), rate (Statement I gives 10%), and time period. Statement I alone only provides the rate - we still need the time duration. Statement II gives the difference between CI and SI as Rs. 70, but without knowing either the rate or time, this cannot be used to find the CI. Even combining both statements, we're missing the crucial time period variable. The formula for CI-SI difference involves time, and without it, we cannot determine the actual compound interest amount.

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