A sum doubles in 10 years at simple interest. Rs. 5,000 is invested at this rate, and after 4 years the rate is raised by 5% per annum. What is the amount at the end of 10 years?
Correct answer C. Rs. 11,500
Topic / 69 questions
Simple Interest MCQs
Simple Interest MCQs test calculations of interest charged only on the original principal, using the formula SI = P × R × T ÷ 100. They are common in NTS, banking, SSC and IBPS papers. Each question has an instant answer, so you can check your working and get faster at finding rate, time or principal.
- Numbers 104
- Percentage 103
- Age Questions 95
- Profit and Loss 82
- Ratio and Proportion 80
- Time and Work 73
- Alligation or Mixture 73
- Fraction and Decimal 72
- Compound Interest 71
- Simple Interest 69
- Area 64
- Volume and Surface Area 64
- Equations and Inequalities 64
- Time and Distance 64
- Simplification 60
- Permutation and Combination 59
- Average 59
- Basic Algebra 58
- Pipes and Cistern 57
- Partnership 56
- Square Root and Cube Root 51
- Problems on Numbers 47
- Probability 45
- Problems on Trains 44
- Odd Man Out and Series 43
- Surds and Indices 43
- Clock 39
- Races and Games 38
- Height and Distance 37
- True Discount 36
- Stocks and Shares 34
- Boats and Streams 34
- Banker's Discount 32
- Counting 32
- Logarithm 30
- Problems on H.C.F and L.C.M 30
- Calendar 30
- Road Problems 26
- Word Problems 25
- Men and Food 24
When the simple interest rate on a deposit falls from 9% to 7.5% per annum, the depositor’s yearly income falls by Rs. 180. What is the deposit?
Correct answer B. Rs. 12,000
Rs. 9,200 is divided into two parts so that the amount of the first after 2 years equals the amount of the second after 4 years, both at 5% per annum simple interest. What is the second part?
Correct answer A. Rs. 4,400
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What is the simple interest on Rs. 18,250 at 8% per annum for 146 days?
Correct answer A. Rs. 584
Out of Rs. 30,000, one-third is invested at 6%, one-half at 8% and the rest at 10% per annum simple interest. What is the total yearly interest?
Correct answer C. Rs. 2,300
Rs. 7,500 amounts to Rs. 9,750 in 3 years at simple interest. What would it amount to in 3 years if the rate were 3% per annum higher?
Correct answer C. Rs. 10,425
Asim lent Rs. 8,000 to Bilal for 2 years and Rs. 5,000 to Kamran for 3 years at the same simple interest rate, and received Rs. 2,480 in total as interest. What was the rate per annum?
Correct answer A. 8%
At what rate of simple interest per annum will a sum become 2.4 times itself in 14 years?
Correct answer B. 10%
At simple interest, Rs. 1 grows to Rs. 1.36 in 4 years. At the same rate, what will Rs. 2,500 amount to in 7 years?
Correct answer C. Rs. 4,075
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The simple interest on a sum for 3.5 years at 11% per annum exceeds the simple interest on it for 2.5 years at 12% per annum by Rs. 680. What is the sum?
Correct answer B. Rs. 8,000
At 9% per annum simple interest, the interest on a sum for 4 years exceeds the interest for 2.5 years by Rs. 540. What is the sum?
Correct answer D. Rs. 4,000
One-quarter of a sum is lent at 6%, one-third at 9% and the rest at 12% per annum simple interest. The total yearly interest is Rs. 1,520. What is the sum?
Correct answer C. Rs. 16,000
In how many months will Rs. 6,000 earn a simple interest of Rs. 405 at 9% per annum?
Correct answer D. 9 months
The simple interest on a sum for 5 years at 6% per annum is Rs. 1,710. What is the simple interest on the same sum for 3 years at 8.5% per annum?
Correct answer C. Rs. 1,453.50
Rs. 13,500 is divided into two parts so that the simple interest on the first at 8% per annum for 3 years equals the simple interest on the second at 6% per annum for 5 years. What is the first part?
Correct answer A. Rs. 7,500
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In what time will Rs. 3,750 amount to Rs. 4,800 at 8% per annum simple interest?
Correct answer C. 3.5 years
Salman borrows Rs. 2,400 at 1.5% per month simple interest. How much interest does he owe after 2 years?
Correct answer C. Rs. 864
A moneylender charges simple interest at 75 paise per Rs. 100 per month. What interest is due on Rs. 16,000 after 3 years?
Correct answer B. Rs. 4,320
If a sum is lent for 4 years at 8.5% per annum instead of 7% per annum simple interest, it earns Rs. 420 more. What is the sum?
Correct answer B. Rs. 7,000
At what rate of simple interest per annum does a sum become 5/4 of itself in 3 years?
Correct answer D. 8 1/3%
About Simple Interest MCQs
This Aptitude topic uses one main formula and its rearrangements. Questions ask for the rate of interest when a sum grows to a known amount in a set number of years, the principal when amounts after two different periods are given, and the combined rate when money is lent to two people for different times. Amount equals principal plus interest, and with simple interest the interest is the same every year. A quick method for two-amount problems is to subtract the earlier amount from the later one to get the interest for the extra years, then work backwards to the principal.
Exams that include Simple Interest MCQs
Pakistan
- NTS
- GAT
- ISSB
- Army/Navy/PAF initial tests
- FPSC
- PPSC
- Banking job tests
India
- SSC CGL
- SSC CHSL
- IBPS PO
- SBI PO
- RRB NTPC
- Campus placements
Bangladesh
- BCS
- Bank job exams
- Government job tests
Frequently asked questions
What is the formula for simple interest?
Simple interest equals principal × rate × time ÷ 100, where the rate is per cent per year and time is in years. The amount is principal plus simple interest. For example, Rs. 12,500 growing to Rs. 15,500 in 4 years earns Rs. 3,000, so the rate is 6 per cent.
How is simple interest different from compound interest?
Simple interest is calculated only on the original principal, so it is the same every year. Compound interest is calculated on the principal plus interest already added, so it grows each period. For the same rate and time beyond one year, compound interest is always higher.
Last reviewed October 2026