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Simple Interest-Data Intensity 2 Multiple Questions and Answers.
Exercise Questions ::
Simple Interest
| 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. | Both I and II are not sufficient to answer |
| D. | Both I and II are necessary to answer |
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| Answer: Option D |
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| Explanation: |
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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. |
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Tutorial Link: |
Published by:Michael Daani
| 2. | 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. | 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 necessary to answer |
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| Answer: Option D |
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| 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. |
| 7 |
Thus, I and II both are needed to get the answer. |
| See More Information |
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|
Tutorial Link: |
Published by:Michael Daani
| 3. | What percentage of simple interest per annum did Anand pay to Deepak? |
| I. Anand borrowed Rs. 8000 from Deepak for four years.
II. Anand returned Rs. 8800 to Deepak at the end of two years and settled the loan. |
| 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 necessary to answer |
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| Answer: Option D |
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| Explanation: |
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Let the rate be R% p.a.
I gives, P = Rs. 8000 and T = 4 years.
II gives, S.I. = Rs. (8800 - 8000) = Rs. 800.
| R = |
( |
100 x S.I. |
) |
= |
( |
100 x 800 |
)% |
= 2 |
1 |
% p.a. |
| P x T |
8000 x 4 |
2 |
Thus, I and II both are needed to get the answer. |
| See More Information |
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|
|
Tutorial Link: |
Published by:Michael Daani
| 4. | What is the rate of simple interest? |
| |
| 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 |
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| Answer: Option D |
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| Explanation: |
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| We know that, R = |
|
100 x S.I. |
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| P x T |
Now, I gives, S.I. = Rs. 4000.
II gives, T = 4 years.
But, P is unknown. So, we cannot find R.
So, given data is insufficient to get R.
∴ Correct answer is (D). |
| See More Information |
|
|
|
Tutorial Link: |
Published by:Michael Daani
