SSC CGL Quant – Simple & Compound Interest – Level 1 · Warm-up · Tier I Level

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SSC CGL Quant – Simple & Compound Interest – Level 1 · Warm-up · Tier I Level – 12 questions, subject: Quantitative Aptitude. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Find the simple interest on ₹ 7,500 at 6% per annum for 4 years.

Correct Answer: D [₹ 1,800]

Explanation:

Total rate 6 × 4 = 24% → 24% of 7,500 = 1,800.

2.  
₹ 9,000 amounts to ₹ 11,160 in 4 years at simple interest. Find the rate per annum.

Correct Answer: A [6%]

Explanation:

SI = 2,160 = 24% of 9,000 in 4 years → 6% a year.

3.  
At what rate per annum will ₹ 2,400 earn a simple interest of ₹ 360 in 3 years?

Correct Answer: B [5%]

Explanation:

360/2,400 = 15% in 3 years → 5% a year.

4.  
In how many years will ₹ 3,200 amount to ₹ 4,160 at 7.5% per annum simple interest?

Correct Answer: C [4 years]

Explanation:

SI = 960 = 30% of 3,200 → 30 ÷ 7.5 = 4 years.

5.  
Find the compound interest on ₹ 5,000 at 10% per annum for 2 years, compounded yearly.

Correct Answer: C [₹ 1,050]

Explanation:

2R + R²/100 = 21% → 21% of 5,000 = 1,050.

6.  
Find the amount on ₹ 6,250 at 4% per annum compound interest for 2 years.

Correct Answer: B [₹ 6,760]

Explanation:

Factor 26/25: 6,250 × 676/625 = 10 × 676 = 6,760.

7.  
What is the difference between CI and SI on ₹ 20,000 for 2 years at 5% per annum?

Correct Answer: D [₹ 50]

Explanation:

P(R/100)² = 20,000 × 1/400 = 50.

8.  
Fill in the blankFor a sum at 12% per annum compounded half-yearly for 2 years, we use a rate of ___ per period for ___ periods.

Correct Answer: A [6%, 4]

Explanation:

Half-yearly: half the rate (6%), double the periods (4).

9.  
Find the simple interest on ₹ 1,500 for 146 days at 10% per annum.

Correct Answer: A [₹ 60]

Explanation:

146/365 = 2/5 year → 1,500 × 10 × 2/5 ÷ 100 = 60.

10.  
Statement-basedWhich of the following is/are correct?
I. For one year compounded yearly, SI and CI on a sum are equal.
II. CI on ₹ 100 at 10% per annum for 2 years is ₹ 20.

Correct Answer: B [Only I]

Explanation:

I: one period → same interest.

11.  
A sum becomes 1.5 times itself in 5 years at simple interest. Find the rate per annum.

Correct Answer: D [10%]

Explanation:

Interest = 0.5P = 50% in 5 years → 10% a year.

12.  
Match the followingMatch the rates with their yearly factors (1 + R/100):
P. 12.5% Q. 20% R. 25%
1. 6/5 2. 5/4 3. 9/8

Correct Answer: C [P-3, Q-1, R-2]

Explanation:

12.5% = 1/8 → 9/8; 20% = 1/5 → 6/5; 25% = 1/4 → 5/4.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 Quantitative Aptitude book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-quantitative-aptitude

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