Top140 Simple Interest Questions For 100% Free [Effective]

Welcome to this guide on simple interest questions. For many, the topic of interest can be confusing, especially when diving into the world of finance. If you’ve ever wondered about simple interest questions or how to work with simple interest problems, you’re in the right place.

We frequently come across the word “interest” in our daily lives, especially when talking about money. There are different types of interests, with simple interest and compound interest being the most common. Through this article, we’ll be focusing extensively on simple interest questions and simple interest problems.

For those who prefer understanding in their native language, we’ve got simple interest questions in Hindi and the simple interest formula in Hindi. Our goal is to make simple interest in Hindi understandable for everyone.

But, what exactly is the simple interest formula? It’s a method used to figure out how much interest you’ll earn or owe over a period of time. The formula is straightforward: SI = PTR/100, where P is the Principal amount, T is the Time (in years), and R is the Interest rate.

Moreover, it’s essential to know that simple interest questions and simple interest and compound interest questions often appear in competitive exams. Whether it’s SSC, SBI, Railways, or any other state exams, mastering simple interest and compound interest questions can give you an edge. If you have a clear concept of ratio and percentage, you’ll find that tackling simple interest questions becomes much more manageable.

So, let’s dive deeper into simple interest questions and help you master the topic, whether in English or simple interest in Hindi. Happy learning!

Top140 Simple Interest Questions

111. If a Sum amounts to Rs. 7200 in 2 years when compounded annually at 20% rate of interest, then find the principal amount.

यदि 20% वार्षिक चक्रवृद्धि ब्याज की दर पर संयोजित होने पर एक राशि 2 वर्षो में 7200 रुपए हो जाती है, तो मूलधन राशि ज्ञात कीजिए। 


Option”B” is correct

Let the principle amount = P

According to question,

7200 = P × {1 + (20 / 100)}2

⇒ 7200 = P × (6 / 5)2

⇒ P = (7200 × 25) / 36

∴ P = 5000

112.Find the compound interest generated by a sum of Rs. 36000 at the rate of 16.67% interest compounded annually in 1 year 73 days.

वार्षिक रूप से संयोजित होने वाली 16.67% ब्याज की दर से 1 वर्ष 73 दिनों में 36000 रूपये की राशि से अर्जित होने वाला चक्रवृद्धि ब्याज ज्ञात कीजिये।


Option”D” is correct

P = Rs. 36000, r = 16.67% = 1/6 and t = 1 year 73 days

Compund Interest = P(1 + r/100)– P

Interest generated in 1 year = 36000(1 + 1/6) – 36000 = Rs. 6000

Interest generated in 2nd year = Interest on (Sum + interest of 1st year)

⇒ Interest on Rs. 42000

⇒ 42000(1 + 1/6) – 42000 = Rs. 7000

But in 2nd year, we need to calculate the interest for 73 days:

∴ Interest for 73 days = 7000 × 73/365 = Rs. 1400

∴ Total interest = 6000 + 1400 = Rs. 7400

113. In how many years will a sum of Rs. 80000 at 10% per annum compounded semi-annually become Rs. 92610?

कितने वर्षों में 80000 रु. की राशि 10% प्रति वर्ष चक्रवृद्धि ब्याज पर अर्द्ध-वार्षिक रूप से समायोजित करने पर 92610 रु. हो जाएगी?


Option”C” is correct

Amount = P[1 + (R/2)/100]2n

92610 = 80000(1 + 5/100)2n

92610/80000 = (21/20)2n

(21/20)3 = (21/20)²ⁿ

Time = 3/2 = 1 year and 6 months

114. In how many years will a sum of Rs. 80000 at 10% per annum compounded semi-annually become Rs. 92610?

कितने वर्षों में 80000 रु. की राशि 10% प्रति वर्ष चक्रवृद्धि ब्याज पर अर्द्ध-वार्षिक रूप से समायोजित करने पर 92610 रु. हो जाएगी?


Option”C” is correct

Amount = P[1 + (R/2)/100]2n

92610 = 80000(1 + 5/100)2n

92610/80000 = (21/20)2n

(21/20)3 = (21/20)²ⁿ

Time = 3/2 = 1 year and 6 months

115. In a mutual fund, a sum amounts to Rs. 2640 in 2 years and to Rs. 3960 in 4 years at a certain rate percent per annum, when the interest is compounded yearly. Find the sum.

म्यूचुअल फंड में एक निश्चित  प्रतिशत दर पर जब सालाना चक्रवृद्धि ब्याज होता है तो एक राशि 2 साल में 2640 रुपये और 4 साल में 3960 रुपये हो जाती है। मूलधन ज्ञात कीजिये। 


Option”D” is correct

Let the sum be Rs. x after 2 years amount will be Rs. 2640 and then after 2 years amount will be Rs. 3960

If A = 2640, T = 2 and

⇒ A = P[1 + (r/100)]t

⇒ 2640 = P(1 + r/100)2

⇒ 2640/P = (1 + r/100)2      —-(1)

Again,

If A = 3960, T = 2 years and P = 2640

⇒ A = P (1 + r/100)t

⇒ 3960 = 2640[1 + (r/100)]2

⇒ 3960/2640 = [1 + (r/100)]2      —-(2)

From Equation (1) and equation (2)

⇒ 2640/P = 3960/2640

⇒ P = (2640 × 2640)/3960

⇒ P = 1760

Short Trick:

Let the sum be Rs. x after 2 years amount will be Rs. 2640 and then after 2 years amount will be Rs. 3960

⇒ [2640/x] = [3960/2640]

⇒ x = (2640 × 2640)/3960 = Rs. 1760

116.An amount of money at compound interest grows up to Rs. 2420 in 2 years and up to Rs. 2662 in 3 years. Find the rate of interest per annum.

एक धन राशि चक्रवृद्धि ब्याज दर पर 2 वर्ष में 2420 रुपए और 3 वर्ष में 2662 रुपए तक बढ़ जाती है। वार्षिक ब्याज की दर ज्ञात कीजिए।


Option”D” is correct

For the 3rd year, principal = Rs. 2420

Suppose Rate of interest = x%

According to problem,

⇒ 2420(1 + x/100) = 2662

⇒ 2420 + 24.2x = 2662

⇒ x = 10

∴ Rate of interest = 10%

117.The compound interest on a certain amount after 2 years is Rs. 410 at the rate of 5%. Find the difference between CI and SI at the same amount for two years at 15% rate of interest.

एक निश्चित धनराशि पर 5% की दर से 2 वर्षों के बाद चक्रवृद्धि ब्याज 410 रुपये है।समान धनराशि पर दो वर्षों में 15% की दर से चक्रवृद्धि ब्याज और साधारण ब्याज के बीच अंतर ज्ञात कीजिये।


Option”C” is correct

Let the certain amount be Rs. x

According to the question∶

x × (1 + 5/100)2 = x + 410

⇒ x × (21/20)2 = x + 410

⇒ (441x/400) – x = 410

⇒ x = 4000

∴ Required difference = 4000 × (15/100)2 = Rs. 90

118. A and B together borrowed a sum of Rs. 51,750 at an interest rate of 7% p.a. compound interest in such a way that to settle the loan, A paid as much amount after three years as paid by B after 4 years from the day of borrowing. The sum (in Rs.) borrowed by A was:

A और B ने मिलकर 7% वार्षिक ब्याज की दर पर 51,750 रु उधार लिया है चक्रवृद्धि ब्याज इस तरह से है कि ऋण का निपटान करने के लिए,  उधार लेने के 4 वर्ष के बाद तक B द्वारा भुगतान की गई राशि तीन वर्ष बाद A द्वारा भुगतान की गई राशि के समान है। A द्वारा उधार लिया गया राशि (रु। में) था:


Option”A” is correct

Let the sum borrowed by A be Rs. x and by B be Rs. y, then

As we know,

A = P (1 + r/100)t

According to the question

x (1 + 7/100)3 = y (1 + 7/100)4

x/y = [(1 + 7/100)4]/[(1 + 7/100)3]

x/y = (107/100)

Ratio of x : y = 107a : 100a

107a + 100a = 207a

207a = 51750

a = 51750/207

a = 250

∴The sum borrowed by A = 107a = 107 × 250 = 26750

Short Trick:

As we know, the difference between years 4 and 3 = 1 year, then

A : B = 107 : 100

107 + 100 = 207 unit

207 unit = 51750

1 unit = 250

107 unit = 26750

119.A man deposits Rs. 500 at the beginning of each year for 2 years at 10% p.a compound annually. Find the maturity value at the end of the 2nd year.

एक आदमी प्रत्येक वर्ष की शुरुआत में 500 रु. 10% प्रति वर्ष चक्रवृद्धि ब्याज की दर से 2 वर्ष के लिए जमा करता है। दूसरे वर्ष के अंत में परिपक्वता मूल्य ज्ञात कीजिए।

A. Rs. 1,050

B. Rs. 1,150

C. Rs. 1,155

D. Rs. 1,200


Option”C” is correct

Deposit amount = Rs. 500, r = 10% and time = 2 years

As we know,

A = P (1 + r/100)n                    [A = amount, P = principal, r = rate of interest, n = time]

⇒ A = 500 × (1 + 10/100)2 + 500 (1 + 10/100)

⇒ A = 500 × (11/10)2 + 500 × (11/10)

⇒ A = 500 × 121/100 + 500 × 11/10

⇒ A = 605 + 550

∴ A = Rs. 1155

120. The compound interest on a certain sum of money for 3 years at the rate of 10% per annum is Rs. 993.00. The simple interest on the same sum at the rate of 8% per annum for 4 years would be equal to which of the following?

एक निश्चित राशि पर 10% प्रति वर्ष की दर से 3 वर्ष में चक्रवृद्धि ब्याज 993.00 रुपये है। समान राशि पर 8% प्रति वर्ष की दर से 4 वर्षों में साधारण ब्याज निम्नलिखित में से किसके बराबर होगा ?


Option”C” is correct

A – P = P(1 + r/100)n – P

⇒ 993 = P[(1 + 10/100)3 – 1]

⇒ P = 993 × (1000/331)

⇒ P = 3000

S.I. = (3000 × 8 × 4)/100

⇒ S.I. = 960

∴ Simple interest will be Rs.960. 

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