General Instructions
- The clock is set at the server. The countdown timer at the top of the screen shows the time remaining. When it reaches zero the test ends by itself — you do not have to submit.
- The Question Palette shows the status of every question using these symbols:
- You have not visited the question yet.
- You have not answered the question.
- You have answered the question.
- You have NOT answered, but have marked it for review.
- You have answered and also marked it for review.
- To answer a question: choose one of the four options, then press Save & Next. To change an answer, select a different option and save again. To remove it, press Clear.
- Your answer is saved only when you press Save & Next or Mark for Review & Next. If you jump to another question from the palette without saving, the answer to the question you were on is not kept. This is how the real exam behaves.
- Sections appear on the bar above the question. You may move between sections at any time, and after the last question of a section you are taken to the first question of the next one.
- Only questions that are saved, or marked for review after answering, are evaluated.
Quant – Simple Interest – Set 3
Read the following instructions carefully
- The test contains 10 questions.
- Each question has 4 options, of which only one is correct.
- You have to finish the test in 8 minutes.
- You are awarded 1 mark for each correct answer, and 0.25 marks are deducted for each wrong answer.
- There is no negative marking for questions you do not attempt.
- You may pause the test at any time and resume where you left off.
- Your marks, the correct answers and an explanation for every question are shown as soon as you submit.
- You can take this test as many times as you like. A fresh set is drawn each time you reload the page.
Test paused
The clock has stopped. Your answers are safe.
Question Paper
Your paper has been submitted
Your answers are saved on our server. Marks are not shown here — results are published on our Telegram channel on .
Review this set's questions and answers (opens after you submit the test)
This free practice set from AndamanJobs has 10 questions to be solved in 8 minutes. Every question is listed below with four options. Open Show answer and explanation under a question to see the correct option and why it is correct. Try the timed test above first, then use this list to revise the questions you got wrong.
- A sum of money at a certain rate per annum of simple interest doubles in the 5 years and at a different rate becomes three times in 12 years. The lower rate of interest per annum is :
- A. 15%
- B. 16 2/3 %
- C. 15 3/4 %
- D. 20%
Show answer and explanation
Answer: B. 16 2/3 %
Doubling in 5 years means 20% a year. Tripling in 12 years means 200/12 = 16 2/3% a year. The lower rate is 16 2/3%.
- Out of Rs 50,000, a man lends Rs 8,000 at 5 1/2 % per annum simple interest and Rs 24,000 at 6% per annum simple interest. He lends the remaining money at a certain rate of interest so that he gets a total annual interest of Rs 3,680. The rate of interest per annum at which the remaining money is lent is:
- A. 7%
- B. 12%
- C. 5%
- D. 10%
Show answer and explanation
Answer: D. 10%
Interest from the first two = 8000 × 5 1/2% + 24000 × 6% = 440 + 1,440 = 1,880. Remaining Rs 18,000 must earn 3,680 - 1,880 = 1,800, which is 10%.
- The simple interest on a sum of money is 1/4 of the principal and the number of years is equal to the rate percent per annum. The rate percent is:
- A. 2.5%
- B. 7.5%
- C. 10%
- D. 5%
Show answer and explanation
Answer: D. 5%
Interest = r × r / 100 of the principal = 1/4, so r² = 25 and r = 5%.
- A sum was invested on simple interest at a certain rate for 2 years. Had it been put at 3% higher rate, it would have fetched Rs. 72 more. The sum is :
- A. Rs. 1,200
- B. Rs. 1,500
- C. Rs. 1,800
- D. Rs. 1,600
Show answer and explanation
Answer: A. Rs. 1,200
The extra 3% for 2 years gives 6% of the sum = 72, so the sum = Rs 1,200.
- A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both as interest. The rate of interest per annum is :
- A. 7%
- B. 5%
- C. 10%
- D. 7 1/8 %
Show answer and explanation
Answer: C. 10%
Interest = (5000 × 2 + 3000 × 4) × r / 100 = 220r = 2200, so r = 10%.
- In how many years will a sum of money double itself at 6 1/4 % simple interest per annum?
- A. 20 years
- B. 24 years
- C. 16 years
- D. 12 years
Show answer and explanation
Answer: C. 16 years
The interest must equal the sum, so time = 100 / 6.25 = 16 years.
- The simple interest on a sum of money is 1/9 of the principal and the number of years is equal to the rate of interest per annum. The rate per annum is:
- A. 3 2/3 %
- B. 3%
- C. 1/3 %
- D. 3 1/3 %
Show answer and explanation
Answer: D. 3 1/3 %
r² / 100 = 1/9, so r² = 100/9 and r = 10/3 = 3 1/3%.
- A sum of money was invested at a certain rate of simple interest for 2 years. Had it been invested at 1% higher rate, it would have fetched Rs. 24 more interest. The sum of money is :
- A. Rs. 1050
- B. Rs. 1200
- C. Rs. 9600
- D. Rs. 1000
Show answer and explanation
Answer: B. Rs. 1200
The extra 1% for 2 years gives 2% of the sum = 24, so the sum = Rs 1,200.
- Rs. 800 becomes Rs. 956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4%, what amount will Rs. 800 become in 3 years ?
- A. Rs. 1050
- B. Rs. 1020.80
- C. Rs. 1025
- D. Rs. 1052
Show answer and explanation
Answer: D. Rs. 1052
Interest = 956 - 800 = 156 in 3 years, so the rate = 156 × 100 / (800 × 3) = 6.5%. At 10.5%: interest = 800 × 10.5% × 3 = 252, so the amount = Rs 1,052.
- On a certain sum, the simple interest at the end of 6 1/4 years becomes 3/8 of the sum. The rate of interest is:
- A. 8%
- B. 6%
- C. 7%
- D. 5%
Show answer and explanation
Answer: B. 6%
r × 6 1/4 / 100 = 3/8 gives r = 37.5 / 6.25 = 6%.